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Posted by on Friday, February 23, 2007 at 10:40am.

The measures of two supplementary angles are in the ratio 5:1. What is the measure of the smaller triangle?

A/B = 5
A + B = 180

Solve those 2 equations in two unknowns.
B is the smaller angle.

Hint: substitute 5B for A in the second equation. Then only B is in the equation, and you can solve for it.

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