A triangle has the following measures for its angles: x, 2x, 90 degrees. Use an equation to find the value of x. Remeber that the sum of an angle measure in a triangle is 180 degrees.

Answer 1

You are adding all three angles together to get 180. So x + 2x + 90 = 180.

Combine like terms: 3x + 90 = 180.

Subtract 90 from both sides. 3x = 90

Divide both sides by 3. x = 30