Which set of lengths cannot form a right triangle?
a. 12 mm, 16 mm, 20 mm
c. 7 mm, 8 mm, 10 mm
B. 6 mm, 8 mm, 10 mm
d. 3 mm, 4 mm, 5 mm

Question

Which set of lengths cannot form a right triangle?
a. 12 mm, 16 mm, 20 mm 
c. 7 mm, 8 mm, 10 mm 
B. 6 mm, 8 mm, 10 mm 
d. 3 mm, 4 mm, 5 mm

anonymous · Answer

the second row

anonymous · Answer

c. 7 mm, 8 mm, 10 mm

anonymous · Answer

72 +8^2 does not equal 10^2 , pythagorus doesnt hold

anonymous · Answer

a,b,c

shadowfiend · Answer

For each one, check that a^2 + b^2 = c^2. If it does, it can be a right triangle. If not, it can't.

There are two that can and two that can't be right triangles above.

anonymous · Answer

^ there is only row that is isnt pythagorean triad, and thats the second row ( which for some strange reason is labelled c )

shadowfiend · Answer

Yes, sorry, you're right. Math fail when checking a :)