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Tomtit [17]
3 years ago
13

Which of the triangles below is not a right triangle?

Mathematics
1 answer:
Nataly [62]3 years ago
8 0

Answer:

B)\ 6ft,8ft,12ft

Step-by-step explanation:

Pythagorean Theorem : In a right triangle, square of hypotenuse is equal to the sum of the squares of the other sides.

(A)\ 3cm,4cm,5cm\\5^2=25\\3^2+4^2=9+16=25\\5^2=3^2+4^2

Hence these sides represent a right triangle.

 

(B)\6ft.8ft,12ft\\12^2=144\\6^2+8^2=36+64=100\\12^2\not=6^2+8^2

Hence this does not represent a right triangle.

(C)\27cm,36cm,45cm\\45^2=2025\\27^2+36^2=729+1296=2025\\45^2=27^2+36^2

This represents a right triangle.

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