Google Classroom
GeoGebraGeoGebra Classroom

G.GCO.1 Complementary Angles (Quick Exploration)

In the applet below, the pink angle and the blue angle are said to be complementary angles. Interact with this applet for a minute or two, and answer the questions that appear below it.

1.

In your own words, describe what it means for 2 angles to be complementary angles.

2.

In the applet above, the blue angle is said to be a complement of the pink angle, and vice versa. Given this information, determine the complement of a 40 degree angle.

3.

What is the complement of a 1-degree angle?

4.

What angle measure has a complement whose measure is equal to itself?

Quick (Silent) Demo: (0:00 - 0:30)