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In triangle ABC
D and F are midpoints of AB and AC respectively
DF is parallel to BC
Step-by-step explanation:
DF = 1/2 BC mid point theorem
DF = BE
angle B = angle DEF
angle c = angle EDF
area of triangles EFD
___________________
area of triangle ABC = EF square
AB square
1/2 AB square
AB square
1/2 square
ratio = 1 : 4
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