- A90°
- B80°
- C100°
- D60°
Step-by-Step Solution
Angles a − d, a, a + d add to 180°, so a = 60°. Then d = 60° − 40° = 20° and the largest angle is 80°.
Answer: B) 80°
The angles of a triangle are in AP and the smallest angle is 40°. What is the largest angle?
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