In the figure below, the area of triangle ADF, triangle DEF, triangle CEF, and triangle BCE is equal.
Find the length of segment AD.
Answer
3 cm
Solution
AD : DE = 1 : 1 and AE : EB = 3 : 1
Thus AD : DE : EB = 1.5 : 1.5 : 1 = 3 : 3 : 2
AD = 8 cm × 3 / (3+3+2) = 3 cm
