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RRB Group D Model Paper 6 with solutions
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© examsnet.com
Question : 47
Total: 99
Angles of a triangle are in the ratio of 1 : 2 : 3. The triangle is_______.
equilateral
isosceles
scalene
right angled
Validate
Solution:
(4) Let the angles be x, 2x and 3x.
Sum of all the angles of a triangle is 180°.
x + 2x + 3x = 180
x = 30
Angles are 30°, 60° and 90°.
⇒ The triangle is a right angled triangle.
© examsnet.com
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