angles

Polygons

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Polygon Triangle Quadrilateral Pentagon Hexagon Heptagon Octagon Nonagon Decagon Sides 3 4 5 6 7 8 9 10 Angles 3 4 5 6 7 8 9 10 Vertices 3 4 5 6 7 8 9 10 Note: polygons with more than 10 sides are usually called an “n-gon”. For example a 15-gon has 15 sides. Polygon: … Read more

Angles

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Angle type Degrees Example Acute 1° – 89° Right 90° Obtuse 91° – 179° Straight 180° Full Rotation “Circle” 360° Every triangle is made up of 180°, and every quadrilateral is made up of 360°.