SOLUTION: Assume that abcd is a rhombus. Prove that ac is prependicular to bd (let e be the point of intersection$
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Question 602872: Assume that abcd is a rhombus. Prove that ac is prependicular to bd (let e be the point of intersection$
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Draw the diagonals forming 4 triangles. Since it is a rhombus, it is also a parallelogram. The diagonals of a parallelogram bisect each other.
AB congruent AD, defn of rhombus
AE congruent AE, reflexive equality
BE congruent DE, diagonals of parallelogram bisect each other
Triangle ABE congruent triangle ADE by SSS
Angle BED is a straight angle, hence measures 180 degrees.
Angle AEB congruent Angle AED by CPCT
measure of BED equals measure AEB + measure AED
measure of BED equals 2 times measure AEB
measure AEB is 90
QED.
John

My calculator said it, I believe it, that settles it
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