Can someone please help me answer this question . But just in two methods please it due in like an hour. Plz no links thank you.

Which math sentence can be used to determine if the triangle is a right triangle?

Which expression is rational? 6. , square root two, square root 14, square root 49

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?