Question 204366
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Let *[tex \Large x] represent the measure of the first angle.  Then the measure of the second angle must be *[tex \Large 2x] and the measure of the third angle must be *[tex \Large x + 20], all measures in degrees.


Since the sum of the measures of the angles of any triangle is 180 degrees, you can say:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x + 2x + (x + 20) = 180]


Solve for *[tex \Large x] to get the measure of the first angle and the others follow easily.



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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