Answer:
(a) ER = 29.5
(b) SR = 29.5
(c) DR = 18.6
Step-by-step explanation:
(a) PE=ER, ES is a perpendicular bisector of PR.
(b) Tryangle SER is an isosceles triangle, therefor SR is = to ER.
(c) QD = DR, DS is a perpendicular bisector of QR.
Bisectors cut and angle or line in half.
Perpandicular means makes a 90 degree angle.
