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Worksheets

Triangles

Total questions: 13

Worksheet time: 11mins

Name
Class
Date
1.

How do you know this is an obtuse triangle?

4 lines
2.

How do you know this is an acute triangle?

4 lines
3.

Name the triangle in as many ways as possible. By sides and angles.

a)

Obtuse

b)

Right

c)

Acute

d)

Isosceles

e)

Equilateral

4.
Name that shape.
a)
quadrilateral, rectangle
b)
quadrilateral, rectangle, square
c)
quadrilateral, parallelogram, rectangle
d)
quadrilateral, parallelogram, rectangle, square
5.

Based on the angles only.

a)

acute

b)

obtuse

c)

right

6.

The angles in this Dorito can best be described as...

a)

Obtuse

b)

Right

c)

Acute

7.
What kind of triangle is this?
a)
Acute
b)
Super
c)
Right
d)
Obtuse
8.

A triangle that has angles measuring 90 degrees, 45 degrees, and 45 degrees with two congruent (equal) sides is called a______________.

a)

Scalene Acute

b)

Isosceles Right

c)

Scalene Right

d)

Equilateral Acute

9.

Classify the following triangle

a)

Isosceles triangle

b)

Equilateral triangle

c)

Scalene triangle

10.

Classify this triangle by its angles

a)

Acute

b)

Right

c)

Obtuse

11.
a)

equilateral acute

b)

isosceles right

c)

scalene acute

12.

Based on the angles only

a)

acute

b)

obtuse

c)

right

13.

Triangles are classified by​ (a)   and angles.

Choose from the below words
sides
color
size