4.(06.01 LC) The distance formula can be used to prove that a quadrilateral has (5 points)
a right angle
congruent angles
parallel sides
congruent sides

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

What is 32+4 x (16 x 1/2) -2 show your work}