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Classifying Triangles Plus

Total questions: 50

Worksheet time: 4hrs 10mins

Name
Class
Date
1.
Look at the sides of this triangle. What type of triangle is this?
a)
Equilateral
b)
Isosceles
c)
Scalene
d)
Obtuse
2.
Look at the sides of this triangle. What type of triangle is this?
a)
scalene
b)
acute
c)
equilateral
d)
isosceles
3.
What type of angle is this?
a)
Acute
b)
Right
c)
Obtuse
d)
Straight
4.
Which type of angle is this?
a)
Acute
b)
Right
c)
Obtuse
d)
Straight
5.
Which type of angle is this?
a)
Acute
b)
Right
c)
Obtuse
d)
Straight
6.
Look at the sides and angles of this triangle. Which type of triangle is pictured?
a)
Equilateral Triangle
b)
Right Isosceles Triangle
c)
Obtuse Scalene Triangle
d)
Obtuse Equilateral Triangle
7.

Look at the sides of this triangle. Which type of triangle is pictured?

a)

Equilateral Triangle

b)

Scalene Triangle

c)

Isosceles Triangle

d)

Right Triangle

8.
Classify this triangle.
a)
A
b)
B
c)
C
d)
D
9.
Look at the sides and angles of this triangle. Which type of triangle is pictured?
a)
A
b)
B
c)
C
d)
D
10.
a)
Equilateral
b)
Isosceles
c)
Scalene
d)
Right
11.
a)
Equilateral
b)
Isosceles
c)
Scalene
d)
Right
12.
a)
Equilateral
b)
Isosceles
c)
Scalene
d)
Right
13.
a)
Equilateral
b)
Isosceles
c)
Scalene
d)
Right
14.
If a triangle has all angles less than 90° and two equal sides, what type of triangle is it?
a)
Acute Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
15.
If a triangle has one angle greater than 90° and no equal sides, what type of triangle is it?
a)
Acute Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
16.
If a triangle has one angle exactly 90° and two equal sides, what type of triangle is it?
a)
Right Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
17.

If a triangle has all three angles equivalent and all three sides equivalent, what type of triangle is it?

a)

Acute Isosceles

b)

Equilateral Equiangular

c)

Obtuse Scalene

d)

Obtuse Isosceles

18.
If a triangle has no equal sides, what type of triangle is it?
a)
Scalene
b)
Equilateral
c)
Right 
d)
Obtuse
19.
If a triangle has two equal sides, what type of triangle is it?
a)
Isosceles
b)
Right
c)
Obtuse
d)
Scalene
20.
In a triangle, how many total degrees are there?
a)
100%
b)
180 degrees
c)
it varies
d)
360 degrees
21.

Find the measure of the indicated angle.

a)

95°95\degree

b)

85°85\degree

c)

35°35\degree

d)

45°45\degree

22.

Find the measure of angle D.

a)

140°140\degree

b)

16°16\degree

c)

40°40\degree

d)

90°90\degree

23.
Find the missing angle.
a)
29° 
b)
39° 
c)
49° 
d)
59° 
24.
A triangle has angle measurements of 26°, 59°, and 95°. What kind of triangle is it?
a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
25.
A triangle has angle measurements of 54°, 52°, and 74°. What kind of triangle is it?

a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
26.
A triangle has angle measurements of 163°, 2°, and 15°. What kind of triangle is it?

a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
27.
A triangle has angle measurements of 74°, 90°, and 16°. What kind of triangle is it?

a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
28.
A triangle has angle measurements of 27°, 72°, and 81°. What kind of triangle is it?

a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
29.

A triangle has side lengths of 19 inches, 19 inches, and 20 inches. Classify the triangle by sides.

a)

equilateral triangle

b)

isosceles triangle

c)

scalene triangle

d)

none of the above

30.

Triangles can be classified by what two things?

a)

Side Length & Love

b)

Number of Vertices

c)

Angles & Side Lengths

d)

Congruent Sides & Peace

31.

A triangle with 3 congruent sides is called a(n) ______

a)

Isosceles Triangle

b)

Equilateral Triangle

c)

Obtuse Triangle

d)

Irregular Triangle

32.

A scalene triangle has _____

a)

3 different angle names

b)

no congruent sides

c)

all sides congruent

d)

3 congruent angles

33.

A triangle with at least one angle greater than 90 degrees is a(n) ________ triangle

a)

obtuse

b)

left

c)

right

d)

acute

34.
How many acute angles must an acute triangle have?
a)
2
b)
1
c)
4
d)
3
35.
What type of triangle is this?
a)
scalene
b)
acute
c)
equilateral
d)
isosceles
36.
Classify the triangle by angles and sides.
a)
Right Scalene
b)
Acute Isosceles
c)
Obtuse Isosceles
d)
Equiangular Equilateral
37.

Classify the triangle by angles and sides.

a)

Equiangular & Equilateral

b)

Scalene & Equilateral

c)

Acute & Scalene

d)

Equiangular & Isosceles

38.
Classify the triangle by angles and sides.
a)
Right Scalene
b)
Right Isosceles
c)
Acute Isosceles
d)
Right Obtuse
39.
Classify the triangle by angles and sides.
a)
Obtuse Scalene
b)
Obtuse Isosceles
c)
Acute Isosceles
d)
Equiangular Scalene
40.
Classify the triangle by angles and sides.
a)
Obtuse Scalene
b)
Obtuse Isosceles
c)
Right Scalene
d)
Acute Isosceles
41.
Classify the triangle by angles and sides.
a)
Equiangular Scalene
b)
Acute Scalene
c)
Acute Equilateral
d)
None of the above
42.
Classify the triangle by angles and sides.
a)
Right Scalene
b)
Equiangular Equilateral
c)
Obtuse Isosceles
d)
None of the above
43.

Classify each triangle by its angles and sides.

a)

Acute, Isosceles

b)

Obtuse, Isosceles

c)

Right, Scalene

d)

Equiangular, Equilateral,

44.

In an equilateral/equiangular triangle, what is the value of each angle?

a)

180°180\degree

b)

90°90\degree

c)

60°60\degree

d)

12.5°12.5\degree

45.

Which triangle appears to be an equilateral triangle?

a)
b)
c)
46.

In triangle EFG, the measure of ∠E\angle E    is 97 degrees, and the measure of  ∠F\angle F  is 15 degrees. What is the measure of  ∠G?\angle G?  

a)

 38°38\degree  

b)

 68°68\degree  

c)

 90°90\degree  

d)

 18°18\degree  

47.
What type of triangle has only acute angles and no congruent sides?
a)
Right Isosceles Triangle
b)
Obtuse Isosceles Triangle
c)
Right Scalene Triangle
d)
Acute Scalene Triangle
48.
What type of triangle has only one right angle and two congruent sides?
a)
Right Isosceles Triangle
b)
Obtuse Isosceles Triangle
c)
Right Scalene Triangle
d)
Acute Scalene Triangle
49.
Find the measure of the missing angle.
a)
8o
b)
58o
c)
122o
d)
64o
50.

solve for x.

a)

50

b)

40

c)

37

d)

52

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