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Elena L [17]
3 years ago
9

Triangle ABC has a perimeter of 22cm.

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
7 0

Answer:

Step-by-step 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

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