ext Using Coordinates to Prove Geometric Theorems: Mastery Test 1 Select the correct answer. The vertices of a parallelogram are Alx1.71). BUX2, Yz), qx3, 13), and (xa, y). Which of the following must be true if parallelogram ABCD is P to be a rectangle? OA 'y 4 - 43 V3 14 13 13 B. V4 - Y3 14-13 V2- 12 (-) = ?) and (???) = -1 (A ( 3 = = ?) and ( Part - 1) = -1 oc -->) and (?)-1 = ? OD. 13?) and (4-3) - ; У4 – — — 94-93. 14-13X12-11 = У4 — уз Уз Y2 12 92-91 \12-11 +1 . =-1 . Ig 12 V4 — уз Y- -13-13-11 I Reset Next