Create equations to solve for fand g:
(f+ 30)°
25
8g-3
72°

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.

why are you giving so many marks make your marks less and make a question list so that i can understand your question very nicely

#12 the answer is the third option