Line hf is tangent to circle d at point e. segment de is the radius of circle d, what is true about def?
a. angle def is congruent to angle deh
b. angle def is an acute angle
c. angle def is an obtuse angle
d. angle def is a straight angle

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project

Ithink i know it but i want to be sure so can you me out ?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.