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More Lessons for Grade 9 Math

Math Worksheets

Examples, videos, worksheets, solutions, and activities to help Algebra students learn how to solve word problems that involve angles.

Printable & Online Algebra Worksheets

**How to solve word problems to find the measure of angles?**

Example:

There is half an apple pie left. You want to eat twice what your little brother eats but you also need to save a slice for your mum. You cut her a slice that is 30°. What is the measure of your piece of pie in degrees?

**Complementary and Supplementary Angles Word Problems**

Example:

The supplement of an angle is 18 less than 3 times the complement of an angle. What is the measure of the angle?

**Geometry Word Problems - Angles of a Triangle**

Students are asked to solve word problems that involve the triangle sum theorem. Students also learn the exterior angle theorem, which states that the exterior angle of a triangle is equal to the sum of the measures of the remote interior angles. Students are then asked to solve problems related to the exterior angle theorem using Algebra.

Example:

The measure of the angles of a triangle are in the ratio 2:5:8. Find the measure of each angle.

**Geometry Word Problems - Supplementary Angles**

Students are given word problems involving complementary and supplementary angles that require the student to set up an equation to find the measures of the given angles.

Example:

Find the measures of two supplementary angles if three times the measure of one angle is 12 degrees less than the measure of the other.

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