If 100, 105, and A are exterior, supplementary angles to the 3 angles in a triangle, what does A equal?
If the angles of a triangle are 120, 20, and B, what does B equal?
If 35 and A are supplementary angles, what does A equal?
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This lesson goes through 3 more problems, using all of your knowledge of triangles and angle measures. These are slightly more challenging, and the third problem does not involve triangles at all, but simply your knowledge of angles. All steps involved in solving the 3 problems are shown.