Question

In an isoscles triangle,one angle is 90 and find one of its base angle?

Answer 1

Answer:45

Step-by-step explanation:An isoscles triangle consists of 2 sides of equal length and 1 side with unequal length.

So, there is a theorem stating that angles opposite to the sides of equal length will be same.

Since already 1 angle is 90 then the other 2 angles must add up to 90 due to the angle sum property of triangle.

Let each of the angles which are equal be 'x'

According to angle sum property :

90 + x + x = 180

90 + 2x = 180

2x = 180 - 90

2x = 90

x = 45