Classify the following triangles into acute , obtuse, right triangles.
(i) In ΔABC ∠A =70°, ∠B = 60°, ∠C = 50°
(ii) In ΔABC ∠A =100°, ∠B = 40°, ∠C = 40°
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Answer:
Triangle 1 is acute angled triangle
Triangle 2 is obtuse angled triangle.
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Answer:
(i)the first is an acute angled triangle because all the angles in it are acute angles
(ii) this is an obtuse angled triangle as you can see angle A is an obtuse angle i.e 100°
none of them is right angled triangle as none of them is having any angle equivalent to 90°
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