AnswersGeometryTriangle Congruence

Triangle Congruence — Test Answers

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

A
No, angle cap m is not congruent to angle cap n cap l cap q .
B
Yes, they are congruent by either ASA or AAS.
C
No, there are no congruent sides.
D
Yes, they are both right triangles.
3

Is there a series of rigid transformations that could map triangle QRS to triangle ABC ? If so, which transformations could be used?

A
No, triangle QRS and triangle ABC are congruent but triangle QRS cannot be mapped to triangle ABC using a series rigid transformations.
B
Yes, triangle QRS can be translated so that cap r is mapped to cap b and then rotated so that cap s is mapped to cap c .
C
No, triangle QRS and triangle ABC are not congruent.
D
Yes, triangle QRS can be translated so that cap q is mapped to cap A and then reflected across the line containing line segment QS .
7

What is the missing reason in the proof?

A
the reflexive property
B
ASA
C
the third angle theorem
D
AAS
8

What is true of triangle FGH ?

A
It has exactly 3 congruent sides.
B
It is an obtuse triangle.
C
It is a right triangle.
D
It has exactly 2 congruent sides.
10

What is the missing reason in the proof?

A
alt. ext. angle s are is congruent to
B
AAS
C
ASA
D
corr. int. angle s are is congruent to
11

What expression represents the measure of angle cap x ?

A
2 A
B
180 minus 2 A
C
90 minus A
D
A over 2
12

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 k to cap n and reflect across the line containing line segment HJ .
D
Translate cap h to cap l and reflect across the line containing line segment JK .
13

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 rotation about point cap c
B
a reflection across the line containing line segment cap c cap b
C
a rotation about point cap b
D
a reflection across the line containing line segment cap A cap b
14

Which pair of triangles can be proven congruent by SAS?

A
Image with description Two triangles share one side. The shared side has a tick mark. A pair of angles at one endpoint of the shared side have matching single arc marks, and a pair of angles at the other endpoint have matching double arc marks.
B
Image with description A triangle is divided into two right triangles by a segment from the top vertex to the base. The shared segment has double tick marks, the two base segments have matching single tick marks, and right-angle markers are shown where the shared segment meets the base.
C
Image with description Two triangles share a diagonal side. The shared diagonal has triple tick marks. One pair of outer sides has matching single tick marks, and another pair of outer sides has matching double tick marks.
D
Image with description Two separate triangles are shown. In the left triangle, the bottom side has a single tick mark, the right slanted side has double tick marks, and the angle at the left endpoint of the bottom side has an arc mark. In the right triangle, the left vertical side has a single tick mark, the upper slanted side has double tick marks, and the angle at the lower endpoint of the vertical side has an arc mark.
17

Triangle JKL is isosceles. The measure of angle cap j is 72 degrees and the measure of angle cap k is 36 degrees Which statement describes angle cap l ?

A
Angle cap l is a base angle and measures 72 degrees .
B
Angle cap l is a base angle and measures 36 degrees .
C
Angle cap l is a vertex angle and measures 36 degrees .
D
Angle cap l is a vertex angle and measures 72 degrees .
18

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
No congruency statement can be made because only two angles in each triangle are known.
D
triangle XYZ is congruent to triangle TUV
19

Which relationship in the diagram is true?

A
triangle SNQ is congruent to triangle SNM by SSS
B
triangle RMS is congruent to triangle RQS by AAS
C
triangle QNR is congruent to triangle MNR by HL
D
triangle MNR is congruent to triangle MNS by ASA
20

What additional information is needed to prove that the triangles are congruent using the AAS congruence theorem?

A
angle cap l cap A cap o is congruent to angle cap l cap A cap m
B
angle cap l cap o cap A is congruent to angle cap l cap m cap A
C
line segment cap o cap A is congruent to line segment cap m cap A
D
line segment cap l cap o is congruent to line segment cap l cap m

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