Write a two column proof Given: AB || DC; BC || AE Prove: BC/EA = BD/EB

AB || DC                               Given

∠ABE ≅ ∠CDB                    Alternate interior angles are congruent

BC || AE                                Given

∠CBD ≅ ∠BEA                     Alternate interior angles are congruent

ΔAEB is similar to ΔCBD    AA Similarity Postulate

BC / EA = BD / EB               Similar sides are proportional

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

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