See complete Problem 234 at:

gogeometry.com/problem/p234_parallelogram_vertex_perpendicular_lines.htm

Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

## Monday, January 26, 2009

### Elearn Geometry Problem 234: Parallelogram, Line through a vertex, Perpendicular lines

Labels:
congruence,
distance,
parallelogram,
perpendicular,
trapezoid,
triangle

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by JCA

ReplyDeleteE=(AC)inter(CD)

aire(ABCD)/2=aire(ABE)=b*AE/2

aire(ABCD)/2=aire(ACD)=aire(ADE)+aire(ACE)=c*AE/2+d*AE/2

b=d+c

draw DC" // AC', C" is point CC' meet it

ReplyDeletetr ABB' and DCC" are similar . Like P235

b/AB = c+d/CD

b = c+d