Find the Angles in an Isosceles Right Triangle: 90-Degree Corner Analysis

Question

Look at the isosceles right-angled triangle below.

Calculate its angles.

00:00 Determine the angles of the triangle

00:03 The sum of the angles in a triangle equals 180

00:07 Given an isosceles triangle

00:11 A right angle equals 90

00:14 In an isosceles triangle, the base angles are equal

00:17 These angles are equal and add up to 180, therefore they equal 45

00:20 This is the solution

Let's remember that the sum of angles in a triangle is equal to 180 degrees.

In a right-angled triangle, there is one right angle equal to 90 degrees.

In an isosceles triangle, the base angles are equal to each other.

Therefore, we can calculate this in the following way:

$180-90=90$

$90:2=45$

In other words, the angle values in this triangle are 90, 45, and 45.

90, 45, 45