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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