Triangle Angle Word Problem 4

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
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Lesson Summary:

In this lesson, Julie Harland teaches about the sum of angles in a triangle and provides word problems involving isosceles and right triangles. She explains that the angles in an isosceles triangle have the same measure, while in a right triangle, one angle is 90 degrees, making the other two angles complementary. Harland provides step-by-step instruction on how to solve word problems involving these types of triangles, including defining variables and writing equations to find the measure of each angle.

Lesson Description:

Sum of angles in a triangle, isosceles triangle, right triangle word problems involving angles in a triangle.

More free YouTube videos by Julie Harland are organized at

Questions answered by this video:
  • What is a right triangle?
  • What is special about a right triangle?
  • If one angle in an isosceles triangle is 16 degrees more than twice the measure of one of the equal angles, what is the measure of each angle?
  • If one angle measure in a right triangle is 38 degrees, what is the measure of the other angles?
  • If the angles of a triangle are x, x, and 2x + 16, what does x equal, and what is the measure of each angle?
  • What is an easy way of solving 4x + 16 = 180?
  • If the angles of a triangle are 38, 90, and x, what does x equal?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson introduces right triangles and goes through two more problems where you need to write and solve an equation to find the measures of the angles in the triangle. All steps involved in finding the angles measures in the triangles are explained.