Question

Which one of the following sets of numbers represents the lengths of the sides of a right triangle?

9, 40, 41
5, 10, 15
6, 9, 10
13, 35, 37

No idea on this one. :(

Answer 1

for this question, you want to think about pythagoras' theorem :)
Pythagoras' theorem will only work on right angle triangles right?
AND remember that the hypotenuse is always the longest side.
So a^2 + b^2 = c^2 (where c is the hypotenuse)
If you substitute in the values and this comes up as TRUE, then you know it's a right-angle triangle because pythagoras' theorem will apply ^_^ and ONLY works on right-angled triangles.

Answer 2

9^2 + 40^2 = 41^2? for the first one

Answer 3

yeeep that's exactly what you do :)
So now just plug in "9^2 + 40^2" and find out what that equals to.
Then find what 41^2 =
If they're the SAME, then it's a right-angled triangle :D

Answer 4

ok, so 81 +1600 = 1681
1681 = 1681
This is true, so the answer would be A, the first one? @butterflydreamer

Answer 5

yaaaas :D!

Answer 6

Yay! thanks!!

Answer 7

no problemo!