Question

can i show you a piture of the problem its easier that way

Answer 1

Triangle ABC

3cm 4cm 6cm

Triangles DEF

10cm 24cm 26 cm

Triangle GHI

8cm, 17 cm 19 cm

The triangle is a right triangle if we have a solution for a Phytogoras theorem

c= greater side

a and b= the other sides

$c=\sqrt[]{a^2+b^2}$

for triangle ABC

c=6

$c=\sqrt[]{3^2+4^2}=5$

c is not 5 so the ABC triangle is not a right triangle

For triangle DEF

c=26cm

$c=\sqrt[]{10^2+24^2}=26$

the triangle DEF is a right triangle

For the triangle GHI

c=19

$c=\sqrt[]{8^2+17^2}=18.78$

the triangle GHI is not a right triangle

the answer is the triangle DEF