Back to Details Practice: Use informal arguments about triangle angle sums, exterior angles, parallel lines cut by a transversal, and the angle-angle criterion. (NC.8.G.5) Open in Editor

Practice: Use informal arguments about triangle angle sums, exterior angles, parallel lines cut by a transversal, and the angle-angle criterion. (NC.8.G.5)

Targeted remediation practice

            📚 Mathematics
                            🎓 Grade 8
                                        ⏱️ 25 minutes
                    

Learning Objectives

Use informal arguments about triangle angle sums, exterior angles, parallel lines cut by a transversal, and the angle-angle criterion.

            Progress
            4 sections
        

1
Practice set 1

Question 1

Parallel lines are cut by a transversal. One angle measures $69^\circ$ . What is the measure of its corresponding angle?

$111^\circ$
$69^\circ$
$90^\circ$
$291^\circ$

Question 2

Two angles of a triangle measure $31^\circ$ and $62^\circ$ . What is the third angle?

$87^\circ$
$90^\circ$
$267^\circ$
$93^\circ$

Question 3

Parallel lines are cut by a transversal. One angle measures $56^\circ$ . What is the measure of its corresponding angle?

$56^\circ$
$124^\circ$
$304^\circ$
$90^\circ$

Question 4

Two angles of a triangle measure $55^\circ$ and $44^\circ$ . What is the third angle?

$261^\circ$
$90^\circ$
$99^\circ$
$81^\circ$

Question 5

Parallel lines are cut by a transversal. One angle measures $129^\circ$ . What is the measure of its corresponding angle?

$51^\circ$
$90^\circ$
$129^\circ$
$231^\circ$

2
Practice set 2

Question 6

Two angles of a triangle measure $36^\circ$ and $53^\circ$ . What is the third angle?

$91^\circ$
$90^\circ$
$89^\circ$
$271^\circ$

Question 7

Parallel lines are cut by a transversal. One angle measures $117^\circ$ . What is the measure of its corresponding angle?

$243^\circ$
$90^\circ$
$63^\circ$
$117^\circ$

Question 8

Two angles of a triangle measure $62^\circ$ and $69^\circ$ . What is the third angle?

$90^\circ$
$229^\circ$
$131^\circ$
$49^\circ$

Question 9

Parallel lines are cut by a transversal. One angle measures $64^\circ$ . What is the measure of its corresponding angle?

$90^\circ$
$116^\circ$
$64^\circ$
$296^\circ$

Question 10

Two angles of a triangle measure $47^\circ$ and $74^\circ$ . What is the third angle?

$90^\circ$
$121^\circ$
$59^\circ$
$239^\circ$

3
Practice set 3

Question 11

Parallel lines are cut by a transversal. One angle measures $67^\circ$ . What is the measure of its corresponding angle?

$90^\circ$
$67^\circ$
$293^\circ$
$113^\circ$

Question 12

Two angles of a triangle measure $72^\circ$ and $72^\circ$ . What is the third angle?

$90^\circ$
$144^\circ$
$216^\circ$
$36^\circ$

Question 13

Parallel lines are cut by a transversal. One angle measures $72^\circ$ . What is the measure of its corresponding angle?

$108^\circ$
$288^\circ$
$90^\circ$
$72^\circ$

Question 14

Two angles of a triangle measure $51^\circ$ and $77^\circ$ . What is the third angle?

$52^\circ$
$232^\circ$
$128^\circ$
$90^\circ$

Question 15

Parallel lines are cut by a transversal. One angle measures $72^\circ$ . What is the measure of its corresponding angle?

$90^\circ$
$108^\circ$
$72^\circ$
$288^\circ$

4
Practice set 4

Question 16

Two angles of a triangle measure $80^\circ$ and $37^\circ$ . What is the third angle?

$243^\circ$
$90^\circ$
$117^\circ$
$63^\circ$

Question 17

Parallel lines are cut by a transversal. One angle measures $131^\circ$ . What is the measure of its corresponding angle?

$90^\circ$
$229^\circ$
$131^\circ$
$49^\circ$

Question 18

Two angles of a triangle measure $41^\circ$ and $61^\circ$ . What is the third angle?

$78^\circ$
$258^\circ$
$90^\circ$
$102^\circ$

Question 19

Parallel lines are cut by a transversal. One angle measures $111^\circ$ . What is the measure of its corresponding angle?

$249^\circ$
$90^\circ$
$69^\circ$
$111^\circ$

Question 20

Two angles of a triangle measure $78^\circ$ and $47^\circ$ . What is the third angle?

$235^\circ$
$125^\circ$
$55^\circ$
$90^\circ$

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