Glencoe Math: Course 3, Volume 2
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Glencoe Math: Course 3, Volume 2 View details
3. Angles of Triangles
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Exercise 21 Page 395

The sum of the measures of the interior angles of a triangle is

Practice makes perfect

We are told that a triangle has angles measuring and We want to find the values of To do it, let's first recall a key piece of information!

Angle Sum of a Triangle

The sum of the measures of the interior angles of a triangle is

With this rule, we can write an equation connecting the measures of the angles of our triangle.
Let's solve the equation and find the value of For simplicity, we will not write the degree symbol.
Solve for
The measure of the missing angle is