Angles - Remainder of 180 Degree Angle (Level 1)

This math topic focuses on understanding how to find the supplementary angle that together with a given angle sums to 180 degrees. It helps students practice basic angle calculations essential for understanding geometry fundamentals. The topic comprises several problems where students determine the unknown angle by subtracting the given angle from 180 degrees, challenging them to accurately perform subtraction and understand angle relationships. The topic is suitable for learners beginning to explore the complexities of geometry basics.

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 1)'. 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 50º angle and another angle. How many degrees is the other angle?

a

105º

b

115º

c

125º

d

130º

e

145º

f

120º

2

A 180º angle is made up of a 130º angle and another angle. How many degrees is the other angle?

a

50º

b

55º

c

35º

d

70º

e

65º

f

45º

3

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

a

65º

b

60º

c

100º

d

75º

e

85º

f

80º

4

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

a

35º

b

15º

c

40º

d

45º

e

30º

f

50º

5

A 180º angle is made up of a 70º angle and another angle. How many degrees is the other angle?

a

110º

b

105º

c

130º

d

100º

e

85º

f

90º

6

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

a

95º

b

115º

c

100º

d

120º

e

105º

f

135º

7

A 180º angle is made up of a 120º angle and another angle. How many degrees is the other angle?

a

70º

b

55º

c

65º

d

75º

e

40º

f

60º