Introduction to angles

Question 1

What is the relationship between these angles?

Answer 1

They are equal.
(Alternate interior angles aka “Z-angles”)

Question 2

What is the measure of b?

Answer 2

98°.
(Alternate interior angles; Z-angles)

Question 3

How are these angles related?

Answer 3

They sum to 90°.
(Complementary angles)

Question 4

What is the measure of x?

Answer 4

27°.
(Complementary angles sum to 90°.)

Question 5

How are these angles related?

Answer 5

They are adjacent angles.

Question 6

How are these angles related?

Answer 6

They are the same size.
(Vertical Angles)

Question 7

What is the measure of angle b?

Answer 7

40°.
(Vertical Angles)

Question 8

How are these angles related?

Answer 8

They are the same size.
(Corresponding Angles; F-angles)

Question 9

What is the measure of y?

Answer 9

38°.
(Corresponding Angles; F-angles)

Question 10

How are angles h/g and i/j related?

Answer 10

They sum to 180°.
(Co-interior Angles; C-angles)

Question 11

What is the measure of angle a?

Answer 11

71°.
(Co-interior Angles; C-angles sum to 180°)