geometry

in an isosceles trapezoid, ABCD, AD congruent BC. diagonal AC bisects angle DAB. if the measure of angle CAB = 15, find: the measure of angle b, measure of angle BCA, measure of ACD, and the measure of angle D

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  1. ∠A = 15+15 = 30 = ∠B
    ∠C = ∠D = (360-30-30)/2 = 150
    so, ∠ACD = 180-150-15 = 15
    ∠BCA = 150-15 = 135

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  2. Given m = 10 and n = 9, the ratio of n to m is 10/9.

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    False

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