Question

A regular pentegon is divided into five identical isosceles triangles. The area of the regular Pentagon is Bcm^2 . Write a formula for T, the area of one of the triangles

Answer 1

B/5

Explanation:

A regular pentagon has five sides of equal lengths. If each vertex of the regular pentagon is connected to its centre, you would have five identical isosceles triangles.

Hence, the five triangles all have equal areas. If the area of a triangle is Xcm², then

5X = B

X= B/5