Triangle ABC has a perimeter of 22cm. AB=8cm BC=5cm By calculation deduce, whether triangle ABC is a right angled triangle

Question

asked Aug 14, 2021 128k views

1 Answer

Haydentech · Answer 1 · 2021-08-17T19:47:42+0000

Answer:

Explanation:

perimeter=22

AB+BC+AC=22

8+5+AC=22

AC=22-13

AC=9

Apply the Pythagorean theorem:

AB²+AB²=AC²

8²+5²=64+25=89

AC²=9²=81

no it is not a right triangle because it failed the Pythagorean theorem