Question

Suppose a triangle has sides 3, 4, and 6. Which of the following must be true?

A. The triangle in question is a right triangle.

B. The triangle in question is not a right triangle.

C. The triangle in question may or may not be a right triangle.

***my answer; B

is that right? :) @jim_thompson5910 :)

Answer 1

how did you get B

Answer 2

well i'm not sure if i did this right, but i used the pythagorean theorem..

3^2 + 4^2 = 6^2

9+16 = 36

25 = 36 (which it doesn't!)

so i thought that this means its an acute triangle?? not sure if i did that right tho :/

Answer 3

ah! wait so did i do this correctly?! :O

Answer 4

you don't need to state whether it's acute or not

all you need to do is show that a^2 + b^2 = c^2 is false, which you did when you got to 25 = 36

so that proves this isn't a right triangle

Answer 5

yes you did, just wanted to make sure you got it and it wasn't a random guess

Answer 6

ahh! yay!! :) but was i right tho? its acute?! :)

and haha yeah no random guesses :P

Answer 7

idk if it's acute or not, but it's definitely not a right triangle

Answer 8

if a^2 + b^2 = c^2 is true, then it's a right triangle

Answer 9

ahh okay!! I see :) Thank youuu!!

Answer 10

okay :)