Prove that the diagonals of a parallelogram bisect each other.
plan: since midpoints will be involved, use multiples of __ to name the coordinates for b, c, and d.

What is the value of the expression below? (81^2)^1/8

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Can some one me with these questions