Three angles lie along a straight line. Two of them are 47 degrees and 88 degrees. What is the third angle?
Answer and explanation
Correct answer: D. 45 degrees
- Step 1: Angles on a straight line add up to 180 degrees.
- Step 2: 47 + 88 = 135.
- Step 3: 180 - 135 = 45.
Answer
45 degrees.
Why not the others: 135 degrees is the sum of the two known angles. 55 and 43 degrees do not fit.
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