In a paralellogram ABCD angles A and C are obtuse. Diagonal AC is drawn?

X & Y are points on AC such that angle XAD and YCB are right angles. Prove that XA=YC or:X & Y are points on AC such that angle XAD and YCB are right

X & Y are points on AC such that angle XAD and YCB are right angles. Prove that XA=YC

or:X & Y are points on AC such that angle XAD and YCB are right angles. Prove that XA=YC

or:You should post a link to a picture of this. Very few people can imagine it. This is a case of similar triangles.

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