Today Carson and I started by proving the sum of the interior angles of a triangle is always 180 degrees. We practiced using this theorem to find the missing angle measures in triangles. Next, we proved the theorem that the exterior angle of a triangle is equal to the sum of the two opposing interior angles. We then practiced using this theorem to set up and solve equations. Lastly, we did a few challeng problems that combined the theorems we discussed today, with the previously learned information about parallel lines and transversals. Carson is doing really well with this content.