Question

Two right triangles are similar if an acute angle of one triangle is congruent to an acute angle of the other triangle

Answer 1

Yes, if it's two right triangles, you already know they have one angle in common (Ninety degrees). When you add in the fact that a second angle is congruent, you'll have the exact same equation for both triangles. Let's just pretend the acute angle is fifty degrees. \[x+50+90=180\] So the answer is true.