Question

what is not true about concave polygons?

• none of the sides of the polygon would pass through the interior of the shape if they were extended
• it has at least one interior angle that has a measure greater than 180°
• none of the sides would pass through the interior of the polygon if they were extended
• it looks like it is caving in

Explanation:

1. A concave polygon has at least one interior angle > $180^\circ$, matches option 3.
2. It visually appears "dented in" at the reflex angle, matches option 4.
3. The side forming the reflex angle will pass through the polygon interior when extended, matches option 2.
4. Option 1 incorrectly claims multiple sides pass through the interior, which is not a required property of concave polygons.

Answer:

A. Multiple sides of the polygon would pass through the interior of the shape if they were extended