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4 cards from this section. Quick, good the night before a test.
Define a polygon.
Think about shapes formed by lines.
What is a regular polygon?
Recall the meaning of 'regular' shapes.
What is a polygon?
Think of shapes like triangles and squares.
True or False: A concave polygon has all angles less than 180 degrees.
Consider examples like stars.
You are given a shape with corners at (1, 1), (5, 1), (4, 4), and (1, 5). Classify this shape as either convex or concave and explain why.
Look at the angles formed at each vertex.
Prove that a regular hexagon is a regular polygon by showing it has equal sides and equal angles.
Use a ruler to measure sides and a protractor for angles.
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