Here, she discusses two with Oprah. Watch to find out why Dr. Brown says inauthenticity is contagious and why perfectionism is really another form of fear. For more Super Soul Sunday, visit http://www.oprah.com/SuperSoulSunday.
Midsegment Theorem Proof. The mid segment theorem states that a segment that connects the mid points of any two sides is parallel to the third side and also its measure is half the measure of the third side. That is, DE ll AB and DE = $\frac{1}{2}$ AB. Therefore, CA = CD + DA = 2 CD.
Prove the Triangle Mid-Segment Theorem. If the figure above, we are given that D is the mid-point of AB and E is the mid-point of AC. So we know that AD = DB and AE = EC. In such situations it is often useful to draw some auxiliary figures and try to find congruent figures.