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How do I set this up and solve it?

0 votes

How do I set this up and find x?

triangle

asked Jun 8, 2013 in GEOMETRY by andrew Scholar

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1 Answer

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In a triangle the sum of the angles are 180º degrees

from the diagram xº + 2xº + 39º = 180º

3xº + 39º = 180º

3xº = 180º - 39º

x = 141/3

x = 47º

Substitute the value x = 47º

2x = 2(47º) = 94º

The angles are 47º and 94º.

answered Jun 10, 2013 by goushi Pupil

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