Here are 2 triangles. One triangle has a 60 degree angle and a 40 degree angle. The other triangle has a 40 degree angle and an 80 degree angle.[br][br][img]data:image/png;base64,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[/img][br][br]Explain how you know the triangles are similar.
I know the angles of a triangle sum to 180 degrees, so I figured out the missing angle in each triangle. Both triangles have angles of 40, 60, and 80 degrees, so they must be similar by the Angle-Angle Triangle Similarity Theorem.