IM 7.7.3 Lesson: Nonadjacent Angles

Given [math]a[/math] and [math]b[/math] are numbers, and [math]a+b=180[/math] , which statements also must be true?

[math]360=2a+2b[/math] [math]a-180=b[/math] [math]a=180-b[/math] [math]a=90[/math] and [math]b=90[/math]

Use any useful tools in the geometry toolkit to identify any pairs of angles in these figures that are complementary or supplementary.

Use a straightedge to draw two intersecting lines. Use a protractor to measure all four angles whose vertex is located at the intersection.

Compare your drawing and measurements to the people in your group. Make a conjecture about the relationships between angle measures at an intersection.

[size=150]Find the measure of the angles in [b]column A[/b]. Your partner will work on the problems in [b]column B[/b]. Check in with your partner after you finish each example. Your answers for each problem number should be the same. If your answers aren’t the same, work together to find the error and correct it.[/size]

IM 7.7.3 Lesson: Nonadjacent Angles

Use any useful tools in the geometry toolkit to identify any pairs of angles in these figures that are complementary or supplementary.

Use a straightedge to draw two intersecting lines. Use a protractor to measure all four angles whose vertex is located at the intersection.

Find the measure of the angles in one column.

Información: IM 7.7.3 Lesson: Nonadjacent Angles