edu290-shapes powerpoint
TRANSCRIPT
![Page 1: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/1.jpg)
SHAPES!
Introduction to some basic polygons
![Page 2: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/2.jpg)
What do you know already?
How many shapes can you think of off the top of your head?
Where have you seen these shapes before?
![Page 3: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/3.jpg)
What is a polygon?
2 dimensional
Closed
Made of straight lines
Which of these are polygons?
No
Yes
No
![Page 4: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/4.jpg)
Triangle
Any three sided polygon
Types of Triangles:
Acute
Obtuse
Right
Scalene
Isosceles
Equilateral
Lets learn about the different kinds
![Page 5: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/5.jpg)
Looking at side lengths
Scalene
All three sides of the triangle are different length
Isosceles
Two of the sides on the triangle are the same length
Equilateral
All three sides of the triangle are equal
![Page 6: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/6.jpg)
Looking at the angles
Acute
ALL of the angles in the triangle is acute (less than 90°)
Obtuse
One of the angles in the triangle is an obtuse angle (greater than 90°)
Right
There is one right angle (90°) in the triangle
![Page 7: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/7.jpg)
Parallelogram
Four sided polygon
Opposite sides are parallel
![Page 8: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/8.jpg)
Rectangle
Polygon
4 sides
4 right angles (90°)
Parallelogram
![Page 9: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/9.jpg)
Square
Special type of rectangle
Four EQAUL sides
Four 90° angles
Parallelogram
![Page 10: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/10.jpg)
Rhombus
Another parallelogram
Opposite sides are parallel
Four EQUAL sides
Which is a rhombus?
![Page 11: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/11.jpg)
Trapezoid
Only one pair of opposite sides are parallel
Four sides
Polygon, but NOT a parallelogram
![Page 12: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/12.jpg)
Pentagon
Polygon
5 sided
Regular Pentagon has 5 equal sides
Which on is the regular pentagon and which is just a pentagon?
![Page 13: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/13.jpg)
Polygon
6 sided
Regular Hexagon has 6 sides of equal length
Hexagon
Click icon to add picture
http://minglearound.files.wordpress.com/2010/12/nuts-bolts-washers.jpg
![Page 14: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/14.jpg)
Octagon
Polygon
Eight sides
Regular octagon has 8 sides of equal length
Photo taken by Jillian Carey
![Page 15: EDU290-Shapes Powerpoint](https://reader035.vdocuments.us/reader035/viewer/2022062708/558a3a8ed8b42aa3508b4573/html5/thumbnails/15.jpg)
Decagon
Click icon to add picture
Polygon
Ten sided figure
Regular decagon has ten equal sides
Which one of these is the regular decagon?