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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