The diagonals of a rhombus are 8 and 10. the area of the rhombus is 20 40 80

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)?

How can you construct perpendicular lines and prove theorems about perpendicular lines

Parallelogram rstu is a rhombus. m∠r = 120° what is m∠t = 120 (what is m∠rsu? )