3. Geometry
3.05 Angles in triangles
Worksheet
1
What makes a triangle:
a
Acute?
b
Obtuse?
c
Right?
2
What makes a triangle:
a
Scalene?
b
Isoceles?
c
Equilateral?
3
Draw an example of the following types of triangles:
a
Obtuse triangle
b
Acute triangle
c
Right triangle
d
Scalene triangle
e
Isoceles triangle
f
Equilateral triangle
4
Classify the following triangles as either scalene, isosceles, or equilateral:
a
b
c
d
e
f
g
h
i
j
5
Classify the following triangles as either acute, obtuse, or right:
a
b
c
d
e
f
g
6
Classify the following triangles in terms of the measure of their angles and the relative length of their sides:
a
b
c
d
e
f
g
h
7
Find the value of x in the following diagrams:
a
b
c
d
e
f
8
For the following diagrams:
i
Find the value of x.
ii
Classify the triangle.
a
b
9
Find the value of x in the following diagrams:
a
b
10
Consider the following diagram:
a
Find the value of x.
b
Find the value of y.
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