Unit Test — Cumulative exam

Question 1

On a coordinate plane, 2 triangles are shown. Triangle 1 has points at A (negative 3, 4), B (negative 2, 1), C (negative 4, 1). Triangle 2 has points at A prime (4, negative 2), B prime (3, negative 5), C prime (5, negative 5).

Revolt · Accepted Answer

(x, y) → (x + 7, y – 6)

Question 2

The proof that ΔABC ≅ ΔCDA is shown.Given: ∥ and ∥ Prove: ΔABC ≅ ΔCDA

Revolt · Accepted Answer

SSS congruence theorem

Question 3

Triangle ABC has the angle measures shown.

Revolt · Accepted Answer

Measure of angle B = 60 degrees

Question 4

On a coordinate plane, a triangle has points A prime (negative 2, 10), B prime (negative 6, 4), and (negative 10, 8).

Revolt · Accepted Answer

(10, –2)

Question 5

3 lines are shown. A line with points M, H, K intersects with a line with points J, H, L at point H. Another line extends from point H to point N in between angle K, H, J. Angle M H L is (3 x + 20) degrees, angle K H N is (x + 25) degrees, and angle J H N is (x + 20) degrees.

Revolt · Accepted Answer

95°

Question 6

Triangles K L P and Q M N are shown. Triangle Q M N is slightly higher than triangle K L P and side Q M connects to side K P. Point M is at the midpoint of K P. Sides K L and Q N are congruent. Angles K L P and Q N M are congruent. Angles K P L and Q M N are both right angles.

Revolt · Accepted Answer

Yes, KLP can be reflected across the line containing KP and then translated so that P is mapped to M.

Question 7

The triangles are congruent by the SSS congruence theorem.

Revolt · Accepted Answer

rotation, then translation

Question 8

Point O is the incenter of ΔABC.

Revolt · Accepted Answer

12°

Question 9

Triangle J K L is shown. Angle J K L is a right angle. An altitude is drawn from point K to point M on side L J to form a right angle. The length of K M is 6 and the length of M J is 3.

Revolt · Accepted Answer

15 units

Unit Test — Cumulative exam Answers

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