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.
And then there's the hypotenuse leg theorem, or HL theorem. This theorem states that 'if the hypotenuse and one leg of a right triangle are congruent to the hypotenuse and one leg of another right triangle, then the triangles are congruent.'. This is kind of like the SAS, or side-angle-side postulate. But SAS requires you to know two sides and the included angle.