Question

Which polygon is concave?
Answer

Polygon 1

Polygon 2

Both Polygon 1 and Polygon 2

Neither Polygon 1 nor Polygon 2

Answer 1

Concave Polygon:
Definition: A polygon that has one or more interior angles greater than 180°
(Result: some vertices point 'inwards', towards the the center.)
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Look at the diagrams. Which one do you think it is?

Answer 2

so both right :)

Answer 3

No. One of the polygons has no interior angle measure greater than or equal to 180. Look again.

Answer 4

hhmm im pretty sure they do