Question

If two angles of a triangle are complementary, then it is
(a) a right triangle
(b) an obtuse angled triangle
(C) an acute angled triangle (d) an equilateral triangle​

Answer 1

Answer:

Then it is right triangle because in a right angled triangle, the two non-right angles are complementary, because in a triangle the three angles add to 180°, and 90° has already been taken by the right angle. When two angles add to 90°, we say they "Complement" each other.

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Answer 2

Answer:

It is a right angled triangle.

Step-by-step explanation:

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