Directed Line Segments and Modeling — Unit test

Question 1

Which best explains whether or not all isosceles triangles are similar?

Revolt · Accepted Answer

All isosceles triangles are not similar. The pair of congruent angles within one triangle is not necessarily congruent to the pair of congruent angles within the other triangle.

Question 2

Triangle MRN is created when an equilateral triangle is folded in half.

Revolt · Accepted Answer

4 units

Question 3

In the diagram, .

Revolt · Accepted Answer

∠VZW ≅ ∠YZX

Question 4

Line segment JL is an altitude in triangle JKM.

Revolt · Accepted Answer

JKM is not a right triangle because KL + LM ≠ 15.3.

Question 5

Triangle ABC will be dilated according to the rule(x,y), where point F is the center of dilation.

Revolt · Accepted Answer

(1, 0)

Question 6

Points Q and R are midpoints of the sides of triangle ABC.

Revolt · Accepted Answer

20 units

Question 7

The statements below can be used to prove that the triangles are similar. ? △ABC ~ △XYZ by the SSS similarity theorem.Which mathematical statement is missing?

Revolt · Accepted Answer

StartFraction B C Over Y Z EndFraction = StartFraction 6 Over 3 EndFraction

Question 8

Line segment ST is dilated to create line segment S'T' using the dilation rule DQ,2.25.

Revolt · Accepted Answer

x = 2.5 units

Question 9

Rectangle ABCD was dilated to create rectangle A'B'C'D' using point R as the center of dilation.

Revolt · Accepted Answer

5 units

Question 10

Point O is the center of dilation. Triangle D E F is dilated to create smaller triangle D prime E prime F prime. The length of O F prime is 3. The length of F prime F is 7.

Revolt · Accepted Answer

Three-tenths

Directed Line Segments and Modeling — Unit test Answers

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