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Classifying Triangles

Total questions: 22

Worksheet time: 17mins

Name
Class
Date
1.

Triangles can be classified by what two things?

a)

Side length

b)

Number of Vertices

c)

Angles

d)

Congruent Sides

2.

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

a)

Isosceles Triangle

b)

Equilateral Triangle

c)

Obtuse Triangle

d)

Irregular Triangle

3.

A scalene triangle has _____

a)

3 different angle names

b)

no congruent sides

c)

all sides congruent

d)

3 congruent angles

4.

Figure formed by three segments joining three noncollinear (not on the same line) points is called a ___________

a)

Parallel line

b)

Triangle

c)

Trapezoid

d)

Plane

5.

The side that is opposite of the right angle in a triangle is called the ________

a)

hypotenuse

b)

leg

c)

base

d)

right angle

6.

In an isosceles triangle, the congruent sides are known as the _______

a)

hypotenuse

b)

legs

c)

base

d)

right angles

7.

An equiangular triangle has at least ____ congruent angles

a)

4

b)

3

c)

2

d)

0

8.

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

a)

obtuse

b)

left

c)

right

d)

acute

9.

In an Isosceles triangle, the side that is opposite the vertex angle is called the _______

a)

base

b)

leg

c)

hypotenuse

d)

longest side

10.

What are the 2 other name classifications of an equiangular triangle?

a)

Acute Triangle

b)

Equilateral Triangle

c)

Right Triangle

d)

Obtuse Triangle

11.

What type of triangle is this?

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

Obtuse

12.
How many acute angles must an acute triangle have?
a)
2
b)
1
c)
4
d)
3
13.
What type of triangle is this?
a)
scalene
b)
acute
c)
equilateral
d)
isosceles
14.
a)
A
b)
B
c)
C
d)
D
15.
a)
A
b)
B
c)
C
d)
D
16.
.
a)
A
b)
B
c)
C
d)
D
17.
a)
A
b)
B
c)
C
d)
D
18.
a)
A
b)
B
c)
C
d)
D
19.
a)
A
b)
B
c)
C
d)
D
20.
An angle whose measure is exactly 90 degrees.
a)
acute
b)
vertical
c)
right
d)
straight
21.

What is an "acute" angle?

a)

An angle that measures 180 degrees

b)

An angle that measures 90 degrees

c)

An angle that measures between 90 and 180 degrees

d)

An angle that measures between 0 and 90 degrees

22.
Which type of triangle is pictured?
a)
Equilateral Triangle
b)
Right Isosceles Triangle
c)
Obtuse Scalene Triangle
d)
Obtuse Equilateral Triangle