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July 1, 2015

Homework Help: Math

Posted by James on Friday, February 23, 2007 at 8:58am.

If the measures of the angles in a triangle are in the ration 3:4:5, the measure of the exterior angle of the triangle can not be
a) 120D b)165D c)105D d)135D

b 165

With the triangle ratio of 3:4:5 the equation can be made:
3x + 4x + 5x = 180
x = 15
The angels of the triangle then are 45, 60, and 75.
Their exterior angles are:
135, 120 and 105
Thus choice b is not a correct responce.

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