What is a concave polygon

The video tutorial explains the difference between convex and concave polygons. It describes how convex polygons have sides that do not intersect the interior, while concave polygons have sides that do. The tutorial provides a visual test to determine if a polygon is concave by extending its sides and checking for intersections within the interior. The concept of concavity is likened to an indent, similar to a cave, to help students remember the difference.

What is a key characteristic of a convex polygon?

• It has an indent like a cave.

• It has more than four sides.

• Its sides, when extended, do not intersect the interior.

• Its sides, when extended, intersect the interior.

How can you identify a concave polygon?

• By measuring its angles.

• By extending its sides to see if they intersect the interior.

• By checking if it has more than four sides.

• By checking if it is symmetrical.

What happens when you extend the sides of a concave polygon?

• They do not intersect the interior.

• They become parallel.

• They form a perfect circle.

• They intersect the interior.

Which of the following best describes a concave polygon?

• It is always a triangle.

• It has no interior angles.

• It is always symmetrical.

• It has an indent like a cave.

What mnemonic can help you remember the difference between concave and convex polygons?

• Concave is always symmetrical.

• Convex has more sides.

• Concave has an indent like a cave.

• Convex is always larger.