Concave Polygon Convex Polygon.

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Presentation transcript:

Concave Polygon Convex Polygon

Pentagon: 5 sides Hexagon: 6 sides Octagon: 8 sides Decagon: 10 sides

1= Concave 2= Convex

This angle is half the size of a right angle If you put three of these angles together, you will get a right angle

This angle is 30° larger than a right angle This angle is 10° smaller than a straight angle

Add two known angles Subtract sum from 180°

Straight Angle: 180°

Degree= measure for angles, uses the symbol ° 180° 90°

Homework Find the missing angle.