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- 1. Multiple Choice
Which set of side lengths could NOT be used to form a triangle?
2 cm, 6 cm, 7 cm
7 cm, 15 cm, 8 cm
5 cm, 5 cm, 5 cm
8 cm, 9 cm, 6 cm
- 2. Multiple Choice
What is the missing angle measure in the triangle?
24°
34°
44°
46°
- 3. Multiple Choice
Which shows the side lengths of the triangle in order from greatest length to least length?
AB, BC, AC
AC, BC, AB
BC, AC, AB
AC, AB, BC
- 4. Multiple Choice
Which of the following shows the relationship among the side lengths of the triangle?
p < l < c
l < c < p
c < p < l
p < c < l
- 5. Multiple Choice
Two sides of a triangle have measures of 6 inches and 12 inches. Which measure could be the length of the third side?
5 in
6 in
10 in
18 in
- 6. Multiple Choice
Which set of side lengths could be used to form a triangle?
4 ft, 5 ft, 9 ft
8 ft, 6 ft, 15 ft
12 ft, 2 ft, 10 ft
5 ft, 8 ft, 12 ft
- 7. Multiple Choice
Which of the following shows the relationship among the angle measures of the triangle?
m∠X < m∠O < m∠V
m∠O < m∠X < m∠V
m∠O < m∠V < m∠X
m∠V < m∠X < m∠O
- 8. Multiple Choice
Mario is designing a logo for the drama club. The logo is a triangle with a 100° angle and a 40° angle. What is the measure of the third angle of the logo?
60°
50°
40°
30°
- 9. Multiple Choice
Brooke drew a triangle. One side of the triangle is 6 centimeters long. Another side of the triangle is 11 centimeters long. Which could be the length of the third side of the triangle?
3 centimeters
5 centimeters
12 centimeters
17 centimeters
- 10. Multiple Choice
Elm Street, Third Street, and Maple Avenue intersect to form a triangle. What is the measure of the angle formed by Third Street and Maple Avenue?
30°
40°
45°
75°
- 11. Multiple Choice
Two angles of a triangle are 25° and 50°. The side lengths are 5 centimeters, 9 centimeters, and 11 centimeters. Which statement is true?
The 9 cm side is opposite the 25° angle.
The 5 cm side is opposite the 25° angle.
The 11 cm side is opposite the 50° angle.
The 5 cm side is opposite the 50° angle.
- 12. Multiple Choice
The traffic sign is an example of an equilateral triangle. An equilateral triangle has 3 equal angles. What is the measure of each angle?
30°
45°
50°
60°
- 13. Multiple Choice
Which set of side lengths could be used to form a triangle?
4 in, 5 in, 6 in
8 in, 12 in, 4 in
11 in, 10 in, 21 in
5 in, 7 in, 12 in
- 14. Multiple Choice
Keith drew a triangle. One angle measures 78°. Another angle measures 27°. What is the measure of the third angle of the triangle?
75°
63°
51°
12°
- 15. Multiple Choice
An isosceles right triangle has a 90° angle and two equal acute angles. What is the measure of each of the acute angles?
35°
40°
45°
50°
- 16. Fill in the Blank
Two side lengths of a triangle are 14 meters and 9 meters. The length of the third side is also a whole number. What is the smallest possible length, in meters, of the third side?
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