Question
If ABCDE is a regular pentagon, what is the length of side CD of the pentagon?
- 9 cm
- 8 cm
- 11 cm
- 4 cm
Hint:
A polygon is called regular if it has equal sides and angles. Thus, a regular triangle is an equilateral triangle, and a regular quadrilateral is a square.
The correct answer is: 4 cm
regular polygon : polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length) , regular polygon
So, CD = AB = 4 cm.
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