Given : klmn is a trapezoid

kf=1, mf || lk, altitude - h

area of klmf = area of fmn



find : kn

Proof:

KLMN- trapezoid                     Given
KF=1                                         Given
MF || LK                                    Given
Altitude-h                                  Given
A-KLMF=A-FMN                     Given
KF*h= FN*h/2                          Area of Parallelogram
FN=2, KF=2                             Area of Parallelogram
KN=KF+FN=3                         Part-Whole Postulate

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