aberfatherbohag aberfatherbohag

09-05-2021
Mathematics

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Triangle ABC has a perimeter of 22cm

AB = 8cm
BC = 5cm

By calculation, deduce whether triangle ABC is a right-angled triangle

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austinnguyen669 austinnguyen669

09-05-2021

ABC is NOT a right triangle because the Pythagorean theorem fails

AC=22 - (8+5) = 22 - 13 = 9

9^2+13^2 = 81 +169=250

22^2 = 484

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