Isosceles Triangle Perimeter Formula
An isosceles triangle is said if it has two equal sides and two equal internal angle. While, the perimeter of an isosceles can be found, if the base and sides are known.
Formula of Isosceles Triangle Perimeter
a = length of the two equal sides
b = Base of the isosceles triangle
Question 1: What is the perimeter of an isosceles triangle when a = 9 cm and b = 6 cm ?
a = 9 cm
b = 6 cm
Perimeter of an isosceles triangle = 2a + b
= 2(9) + 6
= 18 + 6 cm
= 24 cm
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