AnswersOH-Geometry AUnit Test

Unit Test — Cumulative exam Answers

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Angle RSU is complementary to angle UST. Angle QSR is congruent to angle RSU.

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A
They are complementary.
B
They are supplementary.
C
They are congruent.
D
They are obtuse.
2
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Which diagram has all the correct lines of reflectional symmetry for the rectangle?

A
A rectangle is folded diagonally on both corners.
Option A
B
A rectangle is folded by a vertical and horizontal line going through its center.
Option B
C
A rectangle is folded 4 ways. It is folded horizontally, vertically, and diagonally on both corners.
Option C
D
A rectangle is folded 4 ways. It is folded diagonally at each midpoint of every side.
Option D
3

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).

Question illustration
A
Correct. He transformed the triangle according to the rule (x, y) → (–y, x).
B
Incorrect. He transformed the triangle according to the rule (x, y) → (y, –x)
C
Incorrect. He transformed the triangle according to the rule (x, y) → (–y, –x)
D
Incorrect. He transformed the triangle according to the rule (x, y) → (–x, –y)
4

Which statements are true based on the diagram? Select three options.

A
Plane S contains points B and E.
B
The line containing points A and B lies entirely in plane T.
C
Line v intersects lines x and y at the same point.
D
Line z intersects plane S at point C.
E
Planes R and T intersect at line y.
5

3 lines are shown. A line with points M, H, K intersects a line with points J, H, L at point H. A line extends from point H to point P between angle K H J. Angle M H L is 140 degrees and angle K H P is 20 degrees.

Question illustration
A
100°
B
120°
C
140°
D
160°
6

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.

Question illustration
A
figure A
B
figure B
C
figure C
D
figure D
7

A circle is inscribed with 3 lines. Point x is at the center of the circle. A vertical line goes through point x to point z on the edge of the circle. A horizontal line goes through point x to point y on the edge of the circle. A diagonal line goes through point x to point w on the edge of the circle.

Question illustration
A
Line segment Y Z
Option A
B
Line segment W Y
Option B
C
Line segment X Z
Option C
D
Line segment W Z
Option D
8

A regular decagon has 10 sides.

Question illustration
A
5
B
10
C
15
D
20
9

2 lines connect to form a right angle. A third line extends between the 2 lines to form 2 angles which are labeled 1 and 2.

Question illustration
A
30°
B
45°
C
50°
D
75°
10

Which statements are true based on the diagram? Select two options.

A
Points K, M, and N are collinear.
B
Points J, K, and Q are collinear.
C
Point R is the intersection of line KN and line MQ.
D
Lines JQ, KM, and MQ all intersect at point K.
E
There is only one line that can be drawn through points L and P.
11

Which rules could describe the rotation? Select two options.

A
R0, 90°
B
R0, 180°
C
R0, 270°
D
(x, y) → (–y, x)
E
(x, y) → (y, –x)
12

Triangle ABC was transformed to create triangle DEF.

Question illustration
A
corresponds to because they are about the same length.
Option A
B
corresponds to because they are in the same position.
Option B
C
corresponds to because the transformation is isometric.
Option C
D
corresponds to because the length is not preserved.
Option D
13

A line contains points M, N, O, P, Q, R, S with arrows instead of endpoints.

Question illustration
A
point M
B
point N
C
point O
D
point R
14

Which defines a line segment?

A
two rays with a common endpoint
B
a piece of a line with two endpoints
C
a piece of a line with one endpoint
D
all points equidistant from a given point
15

Polygon LMNOP was transformed to create polygon L'M'N'O'P'.

Question illustration
A
Angle
Option A
B
Angle
Option B
C
Angle
Option C
D
Angle
Option D
16

In the diagram, which angles form a linear pair? Select three options.

A
RST and RSV
Option A
B
RST and TSU
Option B
C
RST and VSU
Option C
D
TSU and USV
Option D
E
TSU and RSV
Option E
17

Two lines extend from point S to create a right angle. The vertical line extends from point S through point R. The horizontal line extends right from point S through point T. A third line extends right and up from point S through point U.

Question illustration
A
TSR
Option A
B
TSU
Option B
C
USR
Option C
D
UTS
Option D
18

A transformation of ΔDEF results in ΔD'E'F'.

Question illustration
A
The transformation is a dilation.
B
The transformation is a reflection.
C
The transformation is a rotation.
D
The transformation is a translation.
19

What is the format of this proof?Given: ∠ABC is a right angle, ∠DBC is a straight angleProve: ∠ABD is a right angle

Question illustration
A
two-column proof
B
two-paragraph proof
C
flowchart proof
D
one-paragraph proof
20

Square PQRS is transformed as shown on the graph.

Question illustration
A
R0, 90°
B
R0, 180°
C
R0, 270°
D
R0, 360°

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