SECTION D e and Prove Midpoint theorem of triangle. te and Prove Central Angle Theorem of Circle.

SECTION D e and Prove Midpoint theorem of triangle. te and Prove Central Angle Theorem of Circle. t: sod Pro•e Midpoint theorem of triangle. sa.te a.d Prove C entrai Angle Theorem of Circle.

The line segment joining the mid-points if two sides of a traingle is parallel to the third side.
E and F are mid-points of AB and AC respectively.
Also, CD parallel to BA.
Tr.AEF congruent to Tr.CDF (ASA Rule.)
So,
EF=DF AND BE=AE=DC
Therefore, BCDE is a parallelogram.
Thus gives EF is parallel to BC.
Also,
EF=1/2ED=1/2BC.

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