Lesson 02: Adjacent Angles | Unit 7: Angles, Triangles, and Prisms

Multiple Choice

Angles A and C are supplementary. If angle A measures 74°, what is the measure of angle C?

• 90°
• 106°
• 80°
• 120°

Multiple Choice

Which of the following pairs of angles in square CDFG are complementary?

• (30°, 50°)
• (45°, 45°)
• (10°, 80°)
• (27°, 63°) and (26°, 64°)

Multiple Choice

Which three angles in square $$CDFG$$ have measures that add up to $$180^\circ$$ ?

• 70°, 80°, 30°
• 45°, 45°, 90°
• 63°, 64°, 53°
• 30°, 50°, 100°

Multiple Choice

What is the measure of the complement of an angle measuring 80°?

• 30°
• 20°
• 15°
• 10°

Multiple Choice

Segments $$CD$$ , $$AB$$ , and $$FG$$ intersect at point $$E$$ . Angle $$FEC$$ is a right angle. Identify a pair of angles that are complementary.

• $$\angle AEB$$ and $$\angle BED$$

• $$\angle CEF$$ and $$\angle FEG$$

• $$\angle AEC$$ and $$\angle CED$$

• $$\angle GEF$$ and $$\angle FEB$$

Multiple Choice

Each row contains the degree measures of two supplementary angles. What is the measure of the supplement for an angle of 80°?

• 120°
• 110°
• 90°
• 100°

Multiple Choice

Each row contains the degree measures of two supplementary angles. Complete the table by finding the measure of an angle when its supplement is given as $$x$$ . | measure of an angle | measure of its supplement | | ------------------- | ------------------------- | | $$x$$ | | Provide your answer in terms of $$x$$ .

• 180 - x
• 360 - x
• x - 180
• 90 + x

Multiple Choice

Two angles are complementary. One has a measurement of 19 degrees. What is the measurement of the other?

• 45 degrees
• 90 degrees
• 19 degrees
• 71 degrees

Multiple Choice

Two angles are supplementary. One has a measurement that is twice as large as the other. What are the two angle measurements?

• 60 degrees and 120 degrees
• 90 degrees and 90 degrees
• 30 degrees and 150 degrees
• 45 degrees and 135 degrees

Open Ended

Angles $$C$$ and $$D$$ are complementary. The ratio of the measure of angle $$C$$ to the measure of angle $$D$$ is $$2:3$$ . Find the measure of each angle. Explain or show your reasoning.