The angles of a triangle are in the ratio of 3 : 4 : 8. The triangle is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e obtuse-angled.
| Understanding/Application |
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Let the common ratio of angles be x. 3x + 4x + 8x = 180 15x = 180 x = 12º |
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3x = 36º 4x = 48º 8x = 96º The angles of a triangle are 36º, 48º, and 96º. Since one of the angles is greater than 90º thus it is an obtuse-angled triangle. |