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September 20, 2014

September 20, 2014

Posted by **Sam** on Wednesday, August 8, 2007 at 5:36pm.

Since you will have to use trigonometry to find the angles, surely you must know how to plot points.

take the slope of each of the lines,

e.g. slope BC =(3-(-3))/(4-1) = 2

If ß is the angle BC makes with the x-axis, then tan ß = 2 and

ß=63.43º

In the same way you can find the angles that the other sides make with the x-axis, and from there you will be able to find the angles of the triangle.

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