Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 228
altitudes are equal, butwhose bases are 15 inches and 3 inches, re^ectively. Ex. 814. Prom a given rectangle cut off a rectangle whose area istwo thirds that of the given one. Ex. 815. If the base and altitude of a certain rectangle are 12 inchesand 8 inches, respectively, and the base and altitude… … Given O ARCD, with base b and altitude h.To prove area of ARCD, = b - h. Argument 1. Draw the rectangle EBCF, having b asbase and h as altitude.In rt. A DCF and ARE, DC = AR. Also CF = RE..-. A DCF = A ARE. 2.3. 4.5. 6. 7.8. Now figure ARCF = figuve ARCF,.•. area of ARCD = area of ERCF. But area of…
Geometry, Plane · Geometry, Solid
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