Triangle ABC has area 84 cm^2. D is the midpoint of BC, E is the midpoint of AB. Find ar(triangle BDE) in cm^2. Use the median property twice.

Question

Accepted Answer

21. Median AD: ar(ABD) = 1/2(84) = 42. In triangle ABD, DE is the median from D to AB (E midpoint of AB), so ar(BDE) = 1/2(42) = 21 cm^2.

Triangle ABC has area $84 cm^{2}$ . D is the midpoint of BC, E is the midpoint of AB. Find ar(triangle BDE) in $cm^{2}$ .
Use the median property twice.