The base and altitude of an isosceles triangle are 10 cm and 12 cm respectively. Then the length of each equal side is
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 13 cm
In the isosceles triangle, the base gets bisected by the perpendicular altitude.
⇒ AD = CD = 5 cm
In the triangle ABD
⇒ AB2 = AD2 + BD2
⇒ √(144 + 25)
⇒ √169 = 13 cm
⇒ AB = BC = 13 cm