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Worksheets

Triangles

Total questions: 23

Worksheet time: 6hrs 45mins

Name
Class
Date
1.

What is the best classification of this triangle?

a)

Right triangle

b)

Obtuse triangle

c)

Acute triangle

2.

What is the best way to classify this triangle?

a)

Obtuse triangle

b)

Acute triangle

c)

Right triangle

3.

What makes this a right triangle?

a)

The corner/cube symbol means 90 degrees

b)

There are 3 equal angles

c)

I used a protractor

d)

The angles look about 90 degrees

4.

True or False: This triangle is classified as a scalene.

a)

True

b)

False

5.

How would you classify this triangle?

a)

Acute Isosceles

b)

Obtuse

c)

Acute Scalene

d)

Right triangle

6.

Find X, the missing angle.

a)

X = 180

b)

X = 50

c)

X = 30

d)

X = 60

7.

Find X, the missing angle.

a)

X = 50

b)

X = 60

c)

X = 57

d)

X = 180

8.

To find X, what will be my FIRST step in solving?

a)

Divide by 2

b)

53 + 53

c)

180 - 53

d)

180 ÷\div   53

9.

Solve for X, find the missing angle

a)

X = 53

b)

X = 80

c)

X = 74

d)

X = 70

10.

Using the triangle given, explain how you would solve for X.

4 lines
11.

Solve for X, find the missing the angle.

a)

X = 73

b)

X = 70

c)

X = 146

d)

X = 34

12.

Using the triangle provided, how would you classify this triangle and why?

4 lines
13.

Is X an acute or obtuse angle? (You must solve for X first and show your work/steps)

4 lines
14.

Solve for X, what is the missing angle?

a)

X = 65

b)

X = 44

c)

X = 180

d)

X = 59

15.

Solve for the two missing angles

a)

x = 68, x = 68

b)

x = 44, x = 44

c)

x = 136

d)

x = 180

16.

(a)   has all equal angles and sides.

17.

(a)   has two equal sides and angles.

18.

What angle are described as being larger than 90°90\degree ? 

(a)  

19.

What is the definition of an angle that is 90°90\degree and less?

(a)  

20.

(a)   has no equal sides or angles.

21.

With the facts given, how would you classify this triangle?

a)

Acute isosceles

b)

Equilateral

c)

Acute scalene

22.

Using the visual, what are two ways you can classify this triangle? (click two answer)

a)

Obtuse

b)

Scalene

c)

Equilateral

d)

Acute

23.

With the facts given, how would you classify this triangle? (click two answers)

a)

Right

b)

Acute

c)

Scalene

d)

Isosceles