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The measure of one base angle in an isosceles triangle is 20 degrees. The measure of the largest angle in the triangle is

A) 20 degrees
B) 90 degrees
C) 140 degrees
D) 160 degrees

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2 answers
  1. the other base angle is also 20
    since the three add to 180, ...

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  2. Determine the measure of <C, in degrees, of the isosceles triangle shown below

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