Triangles can be tricky for some folks, but there are several theorems to make things simpler. For example, the Isosceles Triangle Theorem, which states, if two sides of a triangle are congruent, then the angles opposite the sides are congruent. Half the difficulty can often be in remembering these theorems. Professor Burger comes to the rescue with today's free Geometry video on Isosceles and Equilateral Triangles. Building on some of the concepts we learned in the previous videos on Measuring and Constructing Angles and Congruent Triangles, you'll learn how to prove these theorems and apply them to isosceles and equilateral triangles. After watching the 4 lectures on the video, you will have a solid understanding of the theorems and applying them. Just remember to click the forward button to the left of the timestamp to move to the next lecture so you can watch them all.

# Geometry - Isosceles and Equilateral Triangles

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