Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 105
and if, in both cases, a parallelogram ABCE be completedof which AB, BC are adjacent sides, area of A ABC=hiiU of area of O ABCE.Now if the measure of BC be 6, and AD... h, measure of area of/Z7 ABCE is hh ; ., measure of area of A ^^C* is — • Area of a Rhombus. Let ABCD be the given rhombus. Draw… … z> It is easy to prove that AC and BD bisect each other atright angles. Then if the measure of J. C be x, and BD ... y, measure of area of rhombus=twice measure of a ACD. = twice ^^2* Books I. & II.] AREA OF A TRAPEZIUM. 99 Area of a Traptzium. Let A BCD be the given trapezium, having the…
Geometry
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