# Chapter 4 (Standard #6) Practice

46 Questions | Total Attempts: 129  Settings  Use this quiz (and the results) as a way to review/prepare for our test.

Related Topics
• 1.
Why does AAA not work as a reason to prove triangles congruent?
• 2.
Given: Triangle ABC is congruent to triangle XYZ Prove: Side AB is congruent to side XY (what postulate, theorem, or definition confirms that side AB is congruent to side XY?)
• A.

Corresponding parts of congruent triangles are congruent

• B.

ASA Postulate

• C.

SAS Postulate

• D.

SSS Posulate

• E.

AAS Theorem

• 3.
By which reason can it be proven that triangles DAB and DAC are congruent?
• A.

AAA

• B.

AAS

• C.

SSA

• D.

SSS

• 4.
Which combination of congruent corresponding parts can you not use to prove two triangles congruent?
• A.

SAA

• B.

AAA

• C.

ASA

• D.

SAS

• E.

SSS

• 5.
If two of the angles in a triangle are 50 degrees and 100 degrees what is the third angle?
• A.

10 degrees

• B.

50 degrees

• C.

90 degrees

• D.

30 degrees

• 6.
If the sides of a triangle are 8 ft, 4 ft, and 5 ft what type of triangle is it?
• A.

Scalene

• B.

Isosceles

• C.

Equilateral

• D.

• 7.
How many degrees do the three angles of a triangle add up to?
• A.

90

• B.

180

• C.

200

• D.

360

• 8.
What is the name for a triangle that has all three sides the same length?
• A.

Scalene

• B.

Isosceles

• C.

Equilateral

• D.

Obtuse

• 9.
What makes a triangle Isosceles?
• A.

All three sides are the same length

• B.

Two of the sides are the same length

• C.

None of the sides are the same length

• D.

Four sides are the are the same length

• 10.
A triangle with 90 degree angle is a right triangle.
• A.

True

• B.

False

• 11.
A triangle can have two obtuse angles.
• A.

True

• B.

False

• 12.
A triangle can have two acute angles.
• A.

True

• B.

False

• 13.
The acute angles of a right triangle are ___________ complementary.
• A.

Always

• B.

Never

• C.

Sometimes

• 14.
Calculate the angle marked with the question mark.  Note: do not measure since the pictures are not exact. Choose the answer below.
• A.

90 degreees

• B.

41 degree

• C.

40 degrees

• D.

49 degrees

• 15.
You can build two triangles that have the same side lengths but are not congruent.
• A.

True

• B.

False

• 16.
How would you classify this triangle?(Check all that apply)
• A.

Scalene

• B.

Right

• C.

Isosceles

• D.

Acute

• E.

Equlateral

• 17.
What congruence postulate can be used to prove that the two triangles are congruent?
• A.

SAS

• B.

SSS

• C.

ASA

• 18.
What congruence postulate can be used to prove that the two triangles are congruent?
• A.

SSS

• B.

ASA

• C.

SAS

• 19.
What is y?
• A.

160

• B.

20

• C.

80

• 20.
If triangle ABC = triangle JLK, what side is congruent to AB
• A.

JK

• B.

KL

• C.

JL

• 21.
How many sides are congruent in a scalene triangle?
• A.

0

• B.

2

• C.

3

• 22.
Given triangle ABC= triangle FGH, which angle is congruent to angle B?
• A.

Angle G

• B.

Angle F

• C.

Angle H

• 23.
SSA is an acceptable theorem to prove triangles are congruent.
• A.

True

• B.

False

• 24.
Which of the following congruence postulates and theorems are true? (multiple answers)
• A.

SSS

• B.

SSA

• C.

SAS

• D.

AAS

• E.

ASA

• F.

AAA

• 25.
Solve for x.  (Remember figures may not be drawn to scale.  Do not assume.)
• A.

180 degrees

• B.

120 degrees

• C.

90 degrees

• D.

60 degrees

• E.

Cannot be determined

• 26.
Classify this triangle (by angles and sides... so select 2 answers).
• A.

Acute

• B.

Right

• C.

Obtuse

• D.

Equilateral

• E.

Isosceles

• F.

Scalene

• G.

Cannot be determined

• 27.
Which of the 9 possible triangle classifications cannot be drawn on a 2-dimensional surface?  (there may be more than one correct answer)
• A.

Acute scalene

• B.

Acute isosceles

• C.

Acute equilateral

• D.

Right scalene

• E.

Right isosceles

• F.

Right equilateral

• G.

Obtuse scalene

• H.

Obtuse isosceles

• I.

Obtuse equilateral

• J.

All 9 of these are possible on a flat surface

• 28.
Given a triangle with side lengths of 20, 13, and 18...   which is the biggest angle in the triangle?
• A.

The angle opposite the 20 side

• B.

The angle opposite the 13 side

• C.

The angle opposite the 18 side

• D.

It cannot be determined.

• 29.
Given a triangle with side lengths of 3, 4, and 4.9    classify the triangle by its angles.  This is a question we have not covered, but you can figure it out. (hint: think about a 3-4-5 right triangle)
• A.

Acute

• B.

Right

• C.

Obtuse

• 30.
Given the two pairs of congruent markings so far, which of the following pairs of congruent corresponding parts would NOT be helpful in trying to prove the two triangles congruent?
• A.

Sides on the left

• B.

Sides on the bottom

• C.

Angles on the bottom left

• D.

Angles on the bottom right

• 31.
which pair of triangles would you use ASA to prove the congruence of the 2 triangles?
• A.

A

• B.

B

• C.

C

• D.

D

• 32.
These two triangles are congruent by the _______________.
• A.

SAS Postulate

• B.

SSA Postulate

• C.

SSS Postulate

• D.

ASA Postulate

• 33.

• A.

SAS Postulate

• B.

ASA Postulate

• C.

AAA Postulate

• D.

SSS Postulate

• 34.
Which postulate or theorem shows that
• A.

ASA Postulate

• B.

SAS Postulate

• C.

SSS Postulate

• D.

AAS Theorem

• 35.
Refer to the figure. Complete the congruence statement
• A.

Triangle VTU

• B.

Triangle TUV

• C.

Triangle VUT

• D.

Triangle UTV

• 36.
What congruence postulate can be used to prove that the two triangles are congruent?
• A.

ASA

• B.

AAS

• C.

SAS

• 37.
What congruence postulate can be used to prove that the two triangles are congruent?
• A.

SSS

• B.

AAS

• C.

ASA

• 38.
Absent any markings on the two triangles, which of these can be observed simply by looking at any figure?
• A.

Congruent angles via parallel sides (alternate interior angles)

• B.

Congruent sides via shared side (reflexive property)

• C.

Congruent angles via perpendicular sides (right angles)

• D.

Congruent sides via midpoint (definition of midpoint)

• E.

Congruent angles via angle bisector (definition of angle bisector)

• 39.
Why do the angles of a triangle add up to 180 degrees?
• A.

They just do

• B.

It torn off a triangle and placed adjacent to each other with a common vertex, they would form a line (which is 180 degrees)

• C.

It is half a circle

• 40.
Why are are the base angles of an isosceles triangle congruent?
• A.

If folded in half, they based angles would match up perfectly

• B.

They just are

• 41.
Which one do you like?
• A.

Option 1

• B.

Option 2

• C.

Option 3

• D.

Option 4

• 42.
What does CPCTC stand for?
• 43.
When given a midpoint, the follow step on a proof should be...
• A.

2 congruent sides

• B.

2 congruent angles

• C.

2 congruent triangles

• D.

Option 4

• 44.
You and a friend each build a triangle using 3 toothpicks (assume they are all the same size). Which of the following describes the triangles you create?  (Multiple answers)
• A.

Congruent (due to SAS)

• B.

Congruent (due to SSS)

• C.

Equilateral

• D.

Equiangular

• E.

Acute