are congruent, then the quadrilateral is a parallelogram. 11) Find the value of x in the proportion. メ=-3土なタ-4.3-8) Зx x+2 4-x 2.3 8-2x=3x2+6x 3x2+8x-8=0 X%=-8+4053 Xニー2-40--8 6. 6. 12) Assume that AC is the geometric mean of DC and CB. Find CB if AC = 10 and DC = 8. %3D CB=100-12,5 Ac?=DC CB 100%=8.CB ={2,5 13) Two numbers a and b are in the ratio of 2:7. If the first number is decreased by 2 and the second is increased by 1, they are in the ratio of 2:9. Find a and b. 14) If the ratio of the measure of the supplement of an angle to the measure of its complement is 23:5, find the measure of the angle.

are congruent, then the quadrilateral is a parallelogram. 11) Find the value of x in the proportion. メ=-3土なタ-4.3-8) Зx x+2 4-x 2.3 8-2x=3x2+6x 3x2+8x-8=0 X%=-8+4053 Xニー2-40--8 6. 6. 12) Assume that AC is the geometric mean of DC and CB. Find CB if AC = 10 and DC = 8. %3D CB=100-12,5 Ac?=DC CB 100%=8.CB ={2,5 13) Two numbers a and b are in the ratio of 2:7. If the first number is decreased by 2 and the second is increased by 1, they are in the ratio of 2:9. Find a and b. 14) If the ratio of the measure of the supplement of an angle to the measure of its complement is 23:5, find the measure of the angle.

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter3: Triangles

Section3.4: Basic Constructions Justified

Problem 38E

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