Question

Which angle pairs must be supplementary? Select the 4 answers that apply.

angles 1 and 8

angles 2 and 7

angles 1 and 7

angles 2 and 6

angles 4 and 5

angles 3 and 4

Answer 1

Answer : The supplementary angle pairs are:

angles 1 and 8

angles 2 and 7

angles 4 and 5

angles 3 and 4

Step-by-step explanation :

Supplementary pair of angle : It is defined as a pair of adjacent angles on one side of a straight line or we can say that the supplementary angle are those angle in which the sum of two angles is equal to 180°.

In the given image, the pair of angles must be supplementary that are:

angles 1 and 8

angles 2 and 7

angles 4 and 5

angles 3 and 4

angles 1 and 2

angles 7 and 8

angles 3 and 6

angles 5 and 6

Angles 1 and 7 are the vertically opposite angles.

Answer 2

• angles 1 and 8
• angles 2 and 7
• angles 4 and 5
• angles 3 and 4

Explanation:

Angles that form a linear pair are supplementary:

• 1 and 2
• 1 and 8 . . . . bold pairs are on your answer list
• 2 and 7
• 3 and 4
• 3 and 6
• 4 and 5
• 5 and 6
• 7 and 8

The lines g and h are not marked as parallel, so we cannot assume they are.