Download - Notes on Geometry
![Page 1: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/1.jpg)
Notes on Geometry
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AcuteAngles
![Page 3: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/3.jpg)
An angle that is less than 90 degrees.Angles
![Page 4: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/4.jpg)
RightAngles
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An angle that equals 90 degrees.Angles
![Page 6: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/6.jpg)
ObtuseAngles
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An Angle that is more than 90 degrees.Angles
![Page 8: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/8.jpg)
Straight anglesAngles
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An angle that equals 180 degrees.Angles
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ComplementaryAngles
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Two angles that add up to 90 degrees.Angles
![Page 12: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/12.jpg)
supplementaryAngles
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Two angles that measure up to 180 degrees.Angles
![Page 14: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/14.jpg)
parallelAngles
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Two lines that never touch.Angles
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Corresponding anglesAngles
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Are equal! They are the matching angles when a parallel line is crossed with a third line. (so, for example, angle 1 and angle 2 are corresponding angles.)Angles
1
2
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How many degrees are in a triangle?Triangles
![Page 19: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/19.jpg)
180 degrees in every triangle.Triangles
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isoscelesTriangles
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A triangle with two equal sides.Triangles
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equilateralTriangles
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All the sides are equal.Triangles
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scaleneTriangles
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No sides are equalTriangle
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rightTriangles
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A triangle with one right angle.Triangles
![Page 28: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/28.jpg)
ObtuseTriangles
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A triangle with one obtuse angle.Triangles
![Page 30: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/30.jpg)
acuteTriangles
![Page 31: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/31.jpg)
A triangle with all angles that are acute.Triangles
![Page 32: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/32.jpg)
PolygonShapes
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A shape with all straight sides.Shapes
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Regular PolygonShapes
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All equal angles and all equal sides.Shapes
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QuadrilateralShapes
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Shape with 4 sidesShapes
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PentagonShapes
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A shape with five sidesShapes
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HexagonShapes
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A shape with six sides.Shapes
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HeptagonShapes
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A shape with seven sides.Shapes
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OctagonShapes
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A shape with eight sides.Shapes
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NonagonShapes
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A shape with nine sides.Shapes
![Page 48: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/48.jpg)
DecagonShapes
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A shape with ten sides.Shapes
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ParallelogramShapes
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A quadrilateral with two sets of parallel sides.
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TrapezoidShapes
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A quadrilateral with only ONE set of parallel sides.
![Page 54: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/54.jpg)
RectangleShapes
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A parallelogram with 90 degree angles.Shapes
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SquareShapes
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A rectangle with all equal sides. (90 degree angles).
![Page 58: Notes on Geometry](https://reader030.vdocuments.us/reader030/viewer/2022012904/56815eb8550346895dcd3ca9/html5/thumbnails/58.jpg)
Area of a parallelogramShapes
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Base * heightShapes
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Area of a triangleShapes
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½ base*height
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Area of a circleShapes
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A = pi*r-squaredShapes
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CircumferenceShapes
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Perimeter of a circleC=diameter * piShapes