The measure of the vertex angle of an isosceles triangle is (a + 30) . The

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The measure of the vertex angle of an isosceles triangle is (a + 30). The base angles each measure (2a − 15). What is the measure in degrees of one of the base angles?
A. 36
B. 45
C. 57
D. 66
E. 90

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10 ACT Practice Tests

ISBN: 9780071591461

2nd Edition

Authors: Steven Dulan

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