Grade 4 · Math
Find a missing adjacent angle
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An angle of 180° is split into two adjacent angles. One is 73°. What is the other angle in degrees?
- 106
- 109
- 107
- 108
See the answer & why
107
The two parts add to 180°. 180 − 73 = 107°.
A little hint: Subtract the known part from the total angle.
Identify the total angle: a right angle is 90° and a straight angle is 180°.
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