Q. 144.0( 4 Votes )

If in an isosceles triangle, each of the base angles is 40°, then the triangle is
A. Right-angled triangle

B. Acute angled triangle

C. Obtuse angled triangle

D. Isosceles right-angled triangle

Answer :

If 2 angles are 40°


Then;


Sum of all angles is 180°


40° + 40° + x = 180°


x = 100°


Hence;


If one angle is obtuse then it will form obtuse angled triangle

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