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3 years ago

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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3 years ago

N. -2x - 40 = 8(1 -x)

Irina-Kira [14]

Answer:

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Step-by-step explanation:

−2x−40=8(1−x)

Step 1: Simplify both sides of the equation.

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3 years ago

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