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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 PLSSS HELPPPP

Triangle ABC has a perimeter of 22cm AB = 8cm BC = 5cm By calculation, deduce whether triangle ABC is a right-angled triangle PLSSS HELPPPP
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2 votes
Triangle ABC has a perimeter of 22cm

AB = 8cm
BC = 5cm

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

PLSSS HELPPPP

User Sunil Pandey
by
7.7k points

1 Answer

7 votes


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
User Jaskeil
by
8.2k points
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