In a triangle, the ratio of the three interior angles is . What is the degree measure of the largest angle?
Answer and explanation
Correct answer: C. 80 degrees
- Step 1: Sum the ratio parts: . The total interior angle sum of any triangle is .
- Step 2: Find the value of one ratio part: . The largest angle has 4 parts: .
Answer
80 degrees.
Why not the others: '60 degrees' is the middle angle (); '70 degrees' is an incorrect ratio calculation; '90 degrees' assumes a right triangle.
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