AnswersGeometryTriangle Congruence

Triangle Congruence — Test Answers

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5

Two rigid transformations are used to map triangle cap A cap b cap c to triangle cap q cap r cap s The first is a translation of vertex cap b to vertex cap r What is the second transformation?

A
a reflection across the line containing line segment cap c cap b
B
a reflection across the line containing line segment cap A cap b
C
a rotation about point cap c
D
a rotation about point cap b
8

Which pair of triangles can be proven congruent by SAS?

A
Image with description A triangle has no labels. A perpendicular bisector is drawn from the vertex to the opposite base and divides the base into 2 equal halves, so 2 identical triangles are formed.
B
Image with description 2 triangles have a common side, 2 congruent bases, and 2 congruent altitudes.
C
Image with description 2 congruent triangles have a common altitude, congruent angles at the vertex, and congruent base angles at the altitude.
D
Image with description 2 triangles have congruent bases, congruent side lengths, and congruent angles that are not included between two congruent sides.
9

In triangle XYZ , m angle cap x is equal to 90 degrees and m angle cap y is equal to 30 degrees In triangle TUV , m angle cap u is equal to 30 degrees and m angle cap v is equal to 60 degrees Which is true about the two triangles?

A
triangle XYZ is congruent to triangle VUT
B
No congruency statement can be made because the side lengths are unknown.
C
triangle XYZ is congruent to triangle TUV
D
No congruency statement can be made because only two angles in each triangle are known.
10

What is the missing reason in the proof?

A
the third angle theorem
B
AAS
C
the reflexive property
D
ASA
11

If line segment CB bisects angle ACD , what additional information could be used to prove triangle ABC is congruent to triangle DBC using SAS? Choose three correct answers.

A
m angle ABC is equal to 125 degrees and line segment AB is congruent to line segment DB
B
CD is equal to 52 cm
C
triangle ABD is isosceles with base line segment AD
D
triangle ACD is isosceles with base line segment AD
E
AB is equal to 29 cm
12

Which transformation(s) can map triangle BCD onto triangle WXY ?

A
translation, then reflection
B
reflection only
C
translation, then rotation
D
rotation only
13

In the diagram, angle cap j is congruent to angle cap m and line segment JL is congruent to line segment MR What additional information is needed to show triangle JKL is congruent to triangle MNR by SAS?

A
angle liters is congruent to angle cap r
B
line segment KL is congruent to line segment NR
C
line segment JK is congruent to line segment MN
D
angle cap k is congruent to angle cap n
15

Is triangle cap m cap n cap l is congruent to triangle cap q cap n cap l ? Why or why not?

A
No, there are no congruent sides.
B
No, angle cap m is not congruent to angle cap n cap l cap q .
C
Yes, they are congruent by either ASA or AAS.
D
Yes, they are both right triangles.
17

Could triangle JKL be congruent to triangle XYZ ? Explain.

A
No, because the leg of one triangle is equal in length to the leg of the other triangle.
B
No, because the hypotenuse of one triangle is equal in length to the leg of the other triangle.
C
Yes, if line segment JL is congruent to line segment XZ .
D
Yes, if XZ is equal to 10 .
18

How can a translation and a reflection be used to map triangle HJK to triangle LMN ?

A
Translate cap k to cap l and reflect across the line containing line segment HJ .
B
Translate cap k to cap n and reflect across the line containing line segment JK .
C
Translate cap h to cap l and reflect across the line containing line segment JK .
D
Translate cap k to cap n and reflect across the line containing line segment HJ .
19

What is the missing reason in the proof?

A
alt. ext. angle s are is congruent to
B
corr. int. angle s are is congruent to
C
AAS
D
ASA

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Triangle Congruence — Test Answers — Geometry