- A102
- B204
- C92
- D112
Step-by-Step Solution
Third angle = 180° − 55° − 47° = 78°. The angle supplementary to 78° is 180° − 78° = 102°.
Answer: A) 102
Three angles together form a straight line, so their sum is 180°.
Two of them are 55° and 47°. Find the angle that is supplementary to the THIRD angle.
Class 7Complementary and Supplementary AnglesLines and Angles
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