Maths / Constructions / Construction of Triangle using ASA Criteria

QUESTION

If the angles of a triangle are in the ratio 1 : 2 : 7 then the triangle is _____________

 OPTIONS A. Acute angled B. Obtuse angled C. Right angled D. Right angled isosceles
Right Option : B

EXPLANATION
Explain TypeExplanation Content
Text

Let the angles be 1x, 2x, 7x = $180^0$

1x + 2x + 7x = 180

10x = 180

x = 18

The angles are : 18, 36, 126. It is obtuse angled triangle.

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