Question

13 fill in the blank 1 point
what is the measurement of the missing angle?
if angle i is 20 degrees, what is the measure of its complement?

14 multiple choice 1 point
identify whether the given angles or angle measurements are acute, obtuse, or right angles.
\\(90^{\circ} =\\)
obtuse angle
right angle
acute angle

15 matching 1 point

1. the angles shown below are ______.
2. the angles shown below are ______.

Explanation:

Calculate the complement of the angle

$$ 90^\circ - 20^\circ = 70^\circ $$

Classify the given angle measurement

$$ 90^\circ = \text{right angle} $$

Identify the relationship of the angles on a straight line

$$ \text{straight line} = 180^\circ \implies \text{supplementary} $$

Answer:

Question 13

If angle 1 is 20 degrees, what is the measure of its complement? <blank>70</blank>

Question 14

• obtuse angle
• right angle (Correct answer)
• acute angle

Question 15

1. The angles shown below are <blank>supplementary</blank>.