Question

determine if the triangle is a right triangle?Help?

Answer 1

this nearly broke my neck, but which one to be answered?

Answer 2

sorry bout that 8,9,10

Answer 3

use the pythagorean theorem, if the longest leg is the result of the other 2 as stated in the pythagorean theorem, then it's so, else it's not

Answer 4

8 is sure
9 and 10 both have decimal so not sure but they get rounded off theyre all right

Answer 5

@dhiderate how do you know 8 is right triangle?

Answer 6

Did you look at
http://www.khanacademy.org/math/geometry/right_triangles_topic/pyth_theor/v/the-pythagorean-theorem

Answer 7

c=Sqrt[(sqrt(63))^2+(9)^2] <-- pythagoras (identifying a side for right triangles)
the answer was 12