Question

Use the figure below to answer the following questions.

What is mZ4?

Answer 1

Answer: B. 100°

Explanation:

Since triangles contain angles that add up to 180°, angles 3 is 80°. Since Straight Angles are 180°, it means that angle 4 is 180-80, which equals 100°.

Answer 2

100º

Explanation:

Find angle3 which is 80º

All lines are 180º

which means angle3+ angle4 is 180º

180º - 80º

= 100º