Angles - Remainder of 180 Degree Angle (Level 2)

This math topic focuses on calculating the complementary angles that sum up to 180 degrees. Each question presents a scenario where one angle is given, and the task is to determine the degrees of the other angle so that together they form a straight angle (180 degrees). This practice is part of a larger unit on geometry, specifically dealing with intersecting, parallel, and perpendicular lines. Understanding how to find complementary angles is essential in solving problems related to these geometric concepts.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

Angles - Remainder of 180 Degree Angle Worksheet

Math worksheet on 'Angles - Remainder of 180 Degree Angle (Level 2)'. Part of a broader unit on 'Geometry - Angle Basics' Learn online: app.mobius.academy/math/units/geometry_angle_basics/

1

A 180º angle is made up of a 100º angle and another angle. How many degrees is the other angle?

a

85º

b

65º

c

75º

d

80º

e

100º

f

60º

2

A 180º angle is made up of a 80º angle and another angle. How many degrees is the other angle?

a

115º

b

85º

c

75º

d

80º

e

100º

f

95º

3

A 180º angle is made up of a 40º angle and another angle. How many degrees is the other angle?

a

125º

b

130º

c

160º

d

155º

e

135º

f

140º

4

A 180º angle is made up of a 140º angle and another angle. How many degrees is the other angle?

a

30º

b

40º

c

60º

d

45º

e

15º

f

20º

5

A 180º angle is made up of a 60º angle and another angle. How many degrees is the other angle?

a

140º

b

100º

c

125º

d

95º

e

130º

f

120º

6

A 180º angle is made up of a 140º angle and another angle. How many degrees is the other angle?

a

15º

b

30º

c

25º

d

50º

e

60º

f

40º

7

A 180º angle is made up of a 40º angle and another angle. How many degrees is the other angle?

a

145º

b

150º

c

160º

d

155º

e

140º

f

115º