Equilateral & Isosceles Triangles

1.

Multiple Choice

30 sec

1 pt

Which angle is the vertex angle?

<C

<A

<B

2.

Multiple Choice

30 sec

1 pt

Which segment is the base?

Segment AB

Segment BC

Segment AC

3.

Multiple Choice

45 sec

1 pt

Which would be the best classification for the triangle shown?

right isosceles

obtuse scalene

obtuse isosceles

right scalene

4.

Multiple Choice

45 sec

1 pt

Which would be the best classification for the triangle shown?

acute isosceles

obtuse scalene

obtuse isosceles

acute scalene

5.

Multiple Choice

1 min

1 pt

If a triangle has one angle exactly 90° and two equal sides, what type of triangle is it?

Right Isosceles

Acute Scalene

Obtuse Scalene

Obtuse Isosceles

6.

Multiple Choice

1 min

1 pt

If two sides of a triangle are congruent, then the _________________ opposite those sides are congruent.

sides

vertices

angles

measures

7.

Multiple Choice

30 sec

1 pt

What do the angles in an equilateral triangle measure?

30, 60, 90

60, 60, 60

45, 45, 45

90, 90, 90

8.

Multiple Choice

30 sec

1 pt

The sides of an equilateral triangle have...

different measures.

90°.

equal measures.

60°.

9.

Multiple Choice

2 mins

1 pt

Which of the following statements are true?

A scalene triangle has at least one obtuse angle

External angles of a triangle have a sum of 180º

An equilateral triangle is also isosceles

A right triangle has two right angles.

10.

Multiple Choice

1 min

1 pt

Find x.

180

57

61.5

32.7

11.

Multiple Choice

30 sec

1 pt

Find s

60

30

90

45

12.

Multiple Choice

20 sec

1 pt

12

11

8

6

13.

Multiple Choice

1 min

1 pt

Find the measure of angle A

36

72

144

108

14.

Multiple Choice

30 sec

1 pt

Find z

86

68

44

34

15.

Multiple Choice

2 mins

1 pt

Use the picture to answer the question.

76

28

152

56

16.

Multiple Choice

2 mins

1 pt

Find the value of x.

107°

88°

74°

114°

17.

Multiple Choice

1 min

1 pt

Find x

90

45

22

35

18.

Multiple Choice

1 min

1 pt

Find the value of x.

1

4

5

8

19.

Multiple Choice

1 min

1 pt

Find x

9

2

6

4

20.

Multiple Choice

1 min

1 pt

Find x

60

48

30

28

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