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shtirl [24]
3 years ago
6

Which polygon is a concave octagon?

Mathematics
2 answers:
Bezzdna [24]3 years ago
8 0

The polygon in option 3 is not octagon at all, it is heptagon (or 7-sided polygon).

A convex octagon has no angles pointing inwards. More precisely, no internal angles can be more than 180°.

When some internal angle is greater than 180°, it is concave.

In option 2 you can see that one angle is pointing inward, then this octagon is concave.

Answer: correct choice is B.

Lena [83]3 years ago
3 0
2nd one. it is concave because one of the side goes inside of the octogon.Its pretty easy tbh. Hope it helped.
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