shapes
DESCRIPTION
Mengenal bentuk 2DTRANSCRIPT
![Page 1: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/1.jpg)
shapesshapes
![Page 2: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/2.jpg)
shapesshapes
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D stands for DIMENSIONSD stands for DIMENSIONS
The 2 dimensions are :The 2 dimensions are :i.i. Lengths Lengthsii.ii. WidthWidth
Shapes with these 2 dimensions are calledShapes with these 2 dimensions are called2D SHAPES2D SHAPES..
The face of every 2D shapes are The face of every 2D shapes are FLATFLAT..
What are 2D shapes ?
![Page 4: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/4.jpg)
What is a 2D shape ?
L
W
L
W
L
W
L – The length of the shape
W – The width of the shapeThe faces are FLAT.
![Page 5: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/5.jpg)
Face Corner
Straight line
Parts of a 2D shapes
Angle
![Page 6: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/6.jpg)
Face Corner ?
Curve side
Parts of a 2D shapes
x
Anglex
![Page 7: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/7.jpg)
circle
Names of 2D shapes
circle
square
square
triangle
triangle
oval
oval
rectangle
rectangle
pentagon
pentagon
hexagonhexagon heptagonheptagon octagonoctagon
![Page 8: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/8.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : CircleFace : RoundSides : Curve sideCorner : 0Angle : 0
![Page 9: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/9.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : SquareFace : SquareSides : Straight sidesCorner : 4Angle : 4
![Page 10: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/10.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : TriangleFace : TriangularSides : Straight sidesCorner : 3Angle : 3
![Page 11: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/11.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : OvalFace : OvalSides : Curve sideCorner : 0Angle : 0
![Page 12: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/12.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : RectangleFace : RectangularSides : Straight sidesCorner : 4Angle : 4
![Page 13: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/13.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : PentagonFace : PentagonSides : Straight sidesCorner : 5Angle : 5
![Page 14: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/14.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : HexagonFace : HexagonSides : Straight sidesCorner : 6Angle : 6
![Page 15: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/15.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : HeptagonFace : HeptagonSides : Straight sidesCorner : 7Angle : 7
![Page 16: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/16.jpg)
Names of 2D shapes
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
circle square triangle
oval rectangle pentagon
hexagon heptagon octagon
Name : OctagonFace : OctagonSides : Straight sidesCorner : 8Angle : 8
![Page 17: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/17.jpg)
Face Corner
Straight line
Parts of a 2D shapes
Angle
![Page 18: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/18.jpg)
Face Corner
Straight line
Parts of a 2D shapes
Angle
![Page 19: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/19.jpg)
Face Corner ?
Curve side
Parts of a 2D shapes
x
![Page 20: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/20.jpg)
Parts of a 2D shapes
Face Corner
Straight line Angle
![Page 21: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/21.jpg)
Parts of a 2D shapes
Face Corner
Curve side
x
![Page 22: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/22.jpg)
Guess what shape is this
It has 3 straight sides and 3 corners…
Answer : Triangle
![Page 23: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/23.jpg)
Guess what shape is this
It has 4 equal sides and 4 corners…
Answer : Square
![Page 24: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/24.jpg)
Guess what shape is this
It has a round face. It has no
corners…
Answer : Circle
![Page 25: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/25.jpg)
Guess what shape is this
It has 4 corners and 4 sides. 2 of
the sides are longer…
Answer : Rectangle
![Page 26: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/26.jpg)
Fill in the blanks
Name :
Face :
Sides :
Corners :
Square
square
4 equal sides
4
![Page 27: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/27.jpg)
Fill in the blanks
Name :
Face :
Sides :
Corners :
Rectangle
Rectangular
4 straight sides2 sides longer
4
![Page 28: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/28.jpg)
Fill in the blanks
Name :
Face :
Sides :
Corners :
Triangle
Triangular
3 straight sides
3
![Page 29: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/29.jpg)
Fill in the blanks
Name :
Face :
Sides :
Corners :
Circle
Round
A curve side
No corners
![Page 30: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/30.jpg)
Fill in the blanks
Name :
Face :
Sides :
Corners :
Oval
Oval
A curve side
No corners
![Page 31: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/31.jpg)
Characteristic of prisms
![Page 32: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/32.jpg)
Types of 2D shapes ?
There are 2 types of 2D shapes :1. polygon2. non-polygon
Polygons are 2D shapes with only straight sides.
2D shapes which have curved side are
called non-polygons.
![Page 33: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/33.jpg)
What are polygons?
Polygons are 2D shapes with only straight sides.
Examples :Straight lines
![Page 34: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/34.jpg)
What are polygons?
Shapes with curve sides are not polygons.
Examples :Curve sides
![Page 35: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/35.jpg)
State whether these shapes are polygons
Exercise
√ √ x √
√ √ x x
x
√
![Page 36: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/36.jpg)
Are these polygons or non-polygons ?
Answer
![Page 37: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/37.jpg)
Are these polygons or non-polygons ?
√x √
√ x x
![Page 38: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/38.jpg)
shapesshapes
![Page 39: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/39.jpg)
The 3 dimensions are :The 3 dimensions are :i.i. Lengths (L)Lengths (L)ii.ii. Width (W)Width (W)iii.iii. Depth (D)Depth (D)
Shapes with these 3 Shapes with these 3 dimensions are called dimensions are called 3D SHAPES3D SHAPES..
The face of a 3D shapes can be The face of a 3D shapes can be FLAT FLAT or or curvecurve..
What are 3D shapes ?
L
WD
![Page 40: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/40.jpg)
Names of 3D shapes
cube sphere cylinder
cone pyramid
![Page 41: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/41.jpg)
Characteristic of prisms
1. Have at least 2 identical bases
2.Have straight sides
3.Have faces other than the bases in rectangular shapes
![Page 42: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/42.jpg)
Squareprism
Types of 3D shapes
![Page 43: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/43.jpg)
Parts of 3D shapes
Face
Base
Vertex
Edge
![Page 44: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/44.jpg)
Rectangularprism
Types of 3D shapes
![Page 45: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/45.jpg)
Triangularprism
Types of 3D shapes
![Page 46: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/46.jpg)
lineslines&shapesshapes
![Page 47: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/47.jpg)
Are these shapes symmetry?
How to indicate symmetrical shapes
![Page 48: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/48.jpg)
When the shape is cut out in two, are the cutouts the same?
How to indicate symmetrical shapes
same
![Page 49: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/49.jpg)
When the shape is cut out in two, are the cutouts the same?
How to indicate symmetrical shapes
same
![Page 50: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/50.jpg)
When the shape is cut out in two, are the cutouts the same?
How to indicate symmetrical shapes
same
![Page 51: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/51.jpg)
Circle is a symmetrical shape.
How to indicate symmetrical shapes
The symmetry lines are many.
![Page 52: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/52.jpg)
Is a square a symmetrical shape?
How to indicate symmetrical shapes
![Page 53: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/53.jpg)
How to indicate symmetrical shapes
![Page 54: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/54.jpg)
So, is a square a symmetrical shape?
How to indicate symmetrical shapes
yes
![Page 55: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/55.jpg)
How to indicate symmetrical shapes
![Page 56: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/56.jpg)
So, is a triangle a symmetrical shape?
How to indicate symmetrical shapes
yes
![Page 57: Shapes](https://reader033.vdocuments.us/reader033/viewer/2022061120/5466f3fcaf795968038b4833/html5/thumbnails/57.jpg)
State whether these shapes are symmetrical or not
Exercise
√ √ √ √
√ √ √ x
x
x