What is half an octagon?

Answer 1

Assuming you cut it at the angles, the answer is " A Polygon" of 5 sides, also called an irregular pentagon.

If you were to cut the octagon along the straight lines, the answer would still be a polygon but then it would have 6 sides and be called an irregular hexagon.

For example, cutting a stop sign vertically down the middle would give you a six sided polygon.

Answer 2

A baby

Answer 3

trapezium

Answer 4

5

Answer 5

polygon