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Worksheets

Triangles

Total questions: 16

Worksheet time: 17mins

Name
Class
Date
1.

Can the following 3 numbers be side measures of a triangle

7, 5, 4

a)

Yes

b)

No

2.

Can the following 3 numbers be side measures of a triangle

5, 2, 4

a)

Yes

b)

No

3.

Can the following 3 numbers be side measures of a triangle

3, 6, 2

a)

Yes

b)

No

4.

What is the missing Angle?

4 lines
5.
Find the missing angle.
a)
29° 
b)
39° 
c)
49° 
d)
59° 
6.
Can the following side measures form a triangle?
  3 ft, 5 ft, 8 ft 
a)
Yes
b)
No
7.
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
8.

A triangle has side lengths of 19 centimetres, 19 centimetres, and 20 centimetres. What type of triangle is this?

a)

equilateral triangle

b)

isosceles triangle

c)

scalene triangle

d)

none of the above

9.

When classifying a triangle by its sides, what type of triangle has exactly two equal sides?

a)

equilateral triangle

b)

isosceles triangle

c)

scalene triangle

d)

none of the above

10.
Which would be the best classification for the triangle shown?
a)
acute isosceles
b)
right scalene
c)
acute scalene
d)
obtuse scalene
11.
Which would be the best classification for the triangle shown?
a)
right isosceles
b)
obtuse scalene
c)
obtuse isosceles
d)
right scalene
12.

Triangle DEF. If the m∠E is 60 degrees and the m∠F is 60 degrees. What type of triangle is this?

a)

acute, isosceles

b)

obtuse, isosceles

c)

acute, equilateral

d)

acute, scalene

13.

Which of these is an acute triangle?

a)
b)
c)
14.

Which of these is a right triangle?

a)
b)
c)
15.

Which of these triangles is scalene?

a)
b)
c)
16.

Which of these triangles is equilateral?

a)
b)
c)