1. Basic Geometry Review-Shapes and Angles

2. Review Topics Squares Triangles Rectangles Polygons Obtuse Angle Acute Angle Right Angle Finished?

3. Squares Each one of the sides of a square are equal to each other. The angles of the square are 90 degrees each. The total angle sum of a square is 360 degrees.

4. Triangles In a triangle, the sides do not have to be the same length. There are four types of triangles: right triangle, isosceles triangle, equilateral triangle, and scalene triangle. The angle sum of the triangle has to add up to 180 degrees.

5. Rectangles Rectangles have opposite sides that are equal, so side A=C and B=D. Each one of the angles of a rectangle is 90 degrees. The angle sum of a rectangle is 360 degrees. AC D B

6. Polygons Every Day Shapes: Octagon Pentagon

7. Polygons Polygons are named according to the number of sides that they have. For example: Pentagon, pent=5 sides 1 2 3 4 5

8. Acute Angle An angle that is smaller than 90 degrees.

9. What types of shapes have acute angles? Most common: Triangle In this triangle, all three angles are less than 90 degrees.

10. Obtuse Angle An angle that is larger than 90 degrees. http://www.misterteacher.com/alphabetgeo metry/obtuseangles.html

11. What type of shapes have obtuse angles? Most common: Triangle This angle is obtuse because it is larger than 90 degrees.

12. Right Angle http://commons.wikimedia.org/ wiki/File:Right_angle.svg An angle that measures 90 degrees.

13. What types of shapes have right angles? www.star-ed.com Square Right Triangle Rectangle

14. Finished? You have now successfully reviewed your basic geometric shapes and angle names!