Which triangle side lengths form a right triangle? Choose all that apply.

A. 5,6,7

B. 6,8,14

C. 8,15,17

D. 10,12,15

E. 15,20,25

F. 16,18,20

C and E are right triangles

To figure this out, use the Pythagorean Theorem.

a^2+b^2=c^2

A. 5,6,7

5^2+6^2=7^2

25+36=49

61=49

Not a right triangle

B. 6,8,14

6^2+8^2=14^2

36+64=196

100=196

Not a right triangle

C. 8,15,17

8^2+15^2=17^2

64+225=289

289=289

Right triangle

D. 10,12,15

10^2+12^2=15^2

100+144=225

224=225

Not a right triangle

E. 15,20,25

15^2+20^2=25^2

225+400=625

625=625

Right triangle