| |
| |
1. |
Two lines intersect at an angle of 62°. What is the angle of rotation? |
| |
|
A. |
248° |
B. |
31° |
| |
|
C. |
62° |
D. |
124° |
| |
|
Hint |
|
| |
2. |
 has vertices A(3, 7), B(-2, 1), and C(4, -1). Suppose the triangle is rotated 180° to form  . What are the coordinates of B'? |
| |
|
A. |
(1, -2) |
B. |
(2, -1) |
| |
|
C. |
(-2, -1) |
D. |
(2, 1) |
| |
|
Hint |
|
| |
3. |
If two lines intersect at an angle of 23°, what is the angle of rotation? |
| |
|
A. |
32° |
B. |
46° |
| |
|
C. |
16.5° |
D. |
67° |
| |
|
Hint |
|
| |
4. |
Triangle QRS with coordinates Q (3, 2), R (-2, 1) and S (1, -3) is rotated 180° on the coordinate plane. What are the coordinates of triangle Q'R'S'? |
| |
|
A. |
Q'(-3, -2), R'(2, -1), S'(-1, 3) |
| |
|
B. |
Q'(-3, -2), R'(-2, -1), S'(-1, -3) |
| |
|
C. |
Q'(-2, -3), R'(2, -1), S'(-1, 3) |
| |
|
D. |
Q'(-2, -3), R'(-1, 2), S'(-1, 3) |
| |
|
Hint |
|
| |
5. |
Which is not a true statement about rotations? |
| |
|
A. |
A rotation maintains orientation. |
| |
|
B. |
A rotation maintains collinearity. |
| |
|
C. |
A rotation maintains angle measure. |
| |
|
D. |
A rotation maintains distance measure. |
| |
|
Hint |
|
|
|