Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 63
t. Ex. 145. Construct an isosceles triangle, given an arm and the anglewhich the median to it makes with it. Ex. 146. Construct a triangle, given two sides and the angle which amedian to one side makes : (a) with that side ; {h) with the other side. Ex. 147. Construct a triangle, given a side, an… … Griven A ABC with AC prolonged to D, making exterior Z DCB.To prove Z. DCB > Z. ABC ov Z. CAB. Argument 1. Let E be the mid-point of BCj draw AE, and pro-long it to Fj making EF= AE. Draw CF. 2. In A ABE and EFQ, BE = EC, 3. AE = EF. 4. Z BE A = Z CEF. 5, .\AABE = AEFC. 6. \Zb = Z fce. Reasons…
Geometry, Plane · Geometry, Solid
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