Unit Test

Question 1

On a coordinate plane, a triangle has points R (negative 3, 4), T (negative 1, negative 4), and S (negative 4, negative 2).

Revolt · Accepted Answer

(: (3, 4)

Question 2

Which diagram has all the correct lines of reflectional symmetry for the rectangle?

Revolt · Accepted Answer

B: A rectangle is folded by a vertical and horizontal line going through its center.

Question 3

A regular decagon has 10 sides.

Revolt · Accepted Answer

B: 10

Question 4

A point has the coordinates (m, 0) and m ≠ 0.Which reflection of the point will produce an image located at (0, –m)?

Revolt · Accepted Answer

D: a reflection of the point across the line y = –x

Question 5

On a coordinate plane, 5 trapezoids are shown. Trapezoid L M N P is in quadrant 2 and has points (negative 2, 3), (negative 2, 6), (negative 1, 6), and (negative 1, 4). Trapezoid B is reflected in quadrant 2. Trapezoid C is reflected across the y-axis. Trapezoid D is reflected into quadrant 4. Trapezoid A is reflected across the x-axis.

Revolt · Accepted Answer

A: figure A

Question 6

Which statement describes the order of rotational symmetry for an isosceles triangle?

Revolt · Accepted Answer

B: An isosceles triangle has an order 1 rotational symmetry because it does not have all congruent angles.

Question 7

On a coordinate plane, 2 quadrilaterals are shown. The first figure has points A (negative 2, 1), B (negative 4, 1), C (negative 4, 5), and D (negative 2, 4). Figure 2 has points A prime (2, 1), B prime (4, 1), C prime (4, 5), and D prime (2, 4).

Revolt · Accepted Answer

B: ry-axis(x, y) → (–x, y)

Question 8

Which rules could describe the rotation? Select two options.

Revolt · Accepted Answer

57777,57780

Question 9

Triangle QRS is transformed as shown on the graph.

Revolt · Accepted Answer

R: R0, 270°

Question 10

On a coordinate plane, 2 triangles are shown. The first triangle has points F (3, 2), H (4, 5), G (1, 2). The second triangle has points F prime (negative 2, 3), H prime (negative 5, 4), G prime (negative 2, 1).

Revolt · Accepted Answer

A: Correct. He transformed the triangle according to the rule (x, y) → (–y, x).

Unit Test Answers

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