AndersonC said:noseall said:i tell people the 3,4,5 method.
if side A is 3 units, adjacent side B is 4 units then side C (hypotenuse) is 5 units. easy to remember.
3sq = 9
4sq = + 16
----
= 25
sq root of 25= 5.
Also 5, 12, 13.
5sq = 25
12sq = 144
Sum these = 169
Sq root of 169 = 13.
So if you have two perpendicular sides of the triangle measuring 12 and 5 inches the hypotenuse is 13 inches.
.........yeah 5, 12, 13 is ok but not as easy to remember as 3, 4, 5.