Angles Part 2
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Lesson Summary:
In this lesson, Julie Harland covers four problems involving angles. She uses the definitions of terms given in Angles Part 1, including full revolution, acute angles, obtuse angles, straight angles, complementary angles, and supplementary angles. Harland demonstrates how to solve problems involving finding the measures of angles, stating the measure of the largest angle, finding the measures of three angles, and finding the measure of an angle that is 15 degrees more than twice its supplement. Viewers are encouraged to try the problems on their own first before watching the solution.
Lesson Description:
Problems with angles are done on this video.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you solve for a variable in angle problems?
- If x and x + 30 are complementary, what does x equal and what are the measures of the angles?
- If x and 4x + 10 are complementary, what does x equal and what are the measures of the angles?
- If 2x, x + 25, and x - 5 are supplementary angles, what is each angle measure?
- If an angle is 15 degrees more than twice its supplement, what is the measure of the angle?
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Staff Review
This lesson shows four different problems involving angle measures and variables. Properties of angles are used to set up and solve equations to find the variable, and then the angle measures are found. All steps are shown and explained in each problem.
