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1. |
The common endpoint of two rays is called a(n) |
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A. |
angle |
B. |
vertex |
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C. |
side |
D. |
degree |
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Hint |
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2. |
Determine whether the triangles are similar. Explain why or why not. |
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A. |
yes; y = 55 |
B. |
no; y = 65 |
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C. |
yes; x = 85 |
D. |
no; x = 85 |
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Hint |
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3. |
If  , what is length of  ? |
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A. |
1.6 m |
B. |
4.5 m |
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C. |
5.6 m |
D. |
1.8 m |
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Hint |
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4. |
Determine  . |
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A. |
-8 |
B. |
-16 |
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C. |
-32 |
D. |
-4 |
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Hint |
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5. |
Find the best integer estimate for  . |
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A. |
-15 |
B. |
-17 |
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C. |
-13 |
D. |
-11 |
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Hint |
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6. |
Order  and  from least to greatest. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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7. |
Solve a2 = 78. Round your answer to the nearest tenth. |
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A. |
a = 6.9, -6.9 |
B. |
a = 9.4, -9.4 |
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C. |
a = 8.8, -8.8 |
D. |
a = 8.2, -8.2 |
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Hint |
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8. |
Classify the given angle. |
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A. |
acute |
B. |
right |
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C. |
obtuse |
D. |
straight |
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Hint |
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9. |
The measures of the angles of a certain triangle are in the ratio 2:4:9. What are the measures of the angles? |
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A. |
20°, 40°, 90° |
B. |
24°, 48°, 108° |
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C. |
22°, 44°, 99° |
D. |
28°, 56°, 126° |
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Hint |
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10. |
The measures of the angles of a certain triangle are in the ratio 10:11:15. What are the measures of the angles? |
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A. |
42°, 64°, 74° |
B. |
60°, 66°, 90° |
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C. |
50°, 55°, 75° |
D. |
57°, 60°, 63° |
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Hint |
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11. |
A 25-foot ladder is positioned against a building so that the base of the ladder is 7 feet from the building. How high does the ladder reach? |
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A. |
25 feet |
B. |
19 feet |
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C. |
8 feet |
D. |
24 feet |
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Hint |
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12. |
The measures of three sides of a triangle are 12 meters, 16 meters, and 20 meters. Determine whether the triangle is a right triangle. Explain. |
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A. |
Yes, the converse of the Pythagorean Theorem is true. |
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B. |
It is not possible to determine if the triangle is a right triangle. |
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C. |
No, because the converse of the Pythagorean Theorem is false. |
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D. |
No, because this triangle is scalene. |
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Hint |
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13. |
Find the distance between (8, -4) and (2, 15). Round to the nearest tenth. |
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A. |
26.5 units |
B. |
14.9 units |
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C. |
5 units |
D. |
19.9 units |
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Hint |
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14. |
Find the coordinates of the midpoint of  |
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A. |
(1, -1) |
B. |
(-4.5, -1.5) |
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C. |
(0.5, -0.5) |
D. |
(2, 0) |
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Hint |
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15. |
Find tan C to the nearest ten thousandth. |
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A. |
2 |
B. |
0.5 |
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C. |
0.447 |
D. |
0.894 |
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Hint |
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16. |
Find the value of sin 54° to the nearest ten thousandth. |
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A. |
1.3764 |
B. |
0.5878 |
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C. |
0.0094 |
D. |
0.809 |
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Hint |
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