Interior Angles Of A Triangle

In this lesson, we will look at the property of the interior angles of a triangle and how it can be used to find the missing angle inside a triangle.

The sum of the three interior angles in a triangle is always 180°.

Example :

Example:

Find the value of x in the following triangle.

Solution:

x + 24° + 32° = 180° (sum of angles is 180°)

x + 56° = 180°

x = 180° – 56°

= 124°

The following video shows another example of how to find the missing angle inside a triangle.

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