Question

a triangle with the side lengths 12, 20, and 21 is what

Answer 1

use pythagoras's theorem

if

\[a^2 + b^2 > c^2 \]

the triangle is acute

\[a^2 + b^2 < c^2\]

the triangle is obtuse

and lastly

\[a^2 + b^2 = c^2\]

is right angled.

Answer 2

thanks I learned about the same thing in class! Also, my bad for how slow I am im kinda new.

Answer 3

thats ok.... there is always lots to remember