Question

A triangle has 8cm, 9cm, and 12cm. Is the triangle a right-angled triangle? Explain.

Answer 1

Answer:

Using Pythagorean Theorem

8² + 9² = 12²

64 + 81 = 144

145 ≠ 144

Hence, it is not a right-angled triangle.

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Answer 2

No because Pythagorean’s Theorem is not fulfilled