Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 107
ure of AE)=^{m + n)X]y. That is, the measure of the area of a trapezium is found by-multiplying half the measure of the sum of the parallel sidesby the measure of the perpendicular distance between theparallel sides. ICO EUCLIDS ELEMENTS. [Books I. & II. Area of an Irregular PoJi/yon. There are… … S D Thus the area of the irregular polygon ABODE is equalto the sum of the areas of the triangles ABE, EBD, DBC. II. The polygon may he converted into a single triangleof equal area. If ABODE be a pentagon, we can convert it into anequivalent quadrilateral by the following process :
Geometry
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