Unit Test

Question 1

A line extends from a side of a triangle.

Revolt · Accepted Answer

C: an exterior angle

Question 2

In triangle QRS, QR = 8 and RS = 5. Which expresses all possible lengths of side QS?

Revolt · Accepted Answer

3: 3 < QS < 13

Question 3

Triangle J K L is shown. Lines are drawn from each point to the opposite side and intersect at point P. Line segments J O, K M, and L N are created.

Revolt · Accepted Answer

C: JM = ML, LO = OK, and KN = NJ.

Question 4

A triangle with exterior angles is shown. The bottom right angle of the triangle is (3 h + 18) degrees. The bottom right exterior angle is (15 h) degrees.

Revolt · Accepted Answer

B: h = 9

Question 5

[Figure may not be drawn to scale]

Revolt · Accepted Answer

C: 100 units

Question 6

Triangle B C D is shown. Line D B extends through point A to form exterior angle A B C. Angle B D C is 67 degrees and Angle C D B is 60 degrees.

Revolt · Accepted Answer

D: m∠ABC = 127°

Question 7

Point Z is equidistant from the vertices of ΔTUV.

Revolt · Accepted Answer

C: BTZ BUZ

Question 8

Triangle ABC has the angle measures shown.

Revolt · Accepted Answer

A: Measure of angle A = 20 degrees

Question 9

Triangle A B C is shown. Lines are drawn from each point to to the opposite side and intersect at point G. Line segments A D, B E, and C F are created.

Revolt · Accepted Answer

C: Point G can be the centroid because 12:6 equals 2:1.

Question 10

Lines P S and W T are horizontal and parallel. Lines V R and Q R are diagonal and intersect lines P S and W T to form triangle X Y Z.

Revolt · Accepted Answer

A: ∠RXZ and ∠YXZ

Unit Test Answers

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