Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 109
arallel. (6) The two angles adjacent to either of the non-parallel sides aresupplementary. (c) The median of a trapezoid is parallel to the bases and equal to onehalf their sum. Ex 321. In an isosceles trapezoid:(a) The two non-parallel sides are equal. (6) The angles at each base are equal and the… … B DA Given ZabC] P any point in BE^ the bisector of ZabC\ PDand PEj the Js from P to BA and BC respectively. To prove PD = PE, Argument Only 1. In rt. A DBP and PBE^ PB=PB. 2. Z DBP = Z PBE, 3. .-. A DBP = APBE, 4. .*. PD = PE, Q.E.D. 253. Prop. XL may be stated as follows: Every point in the…
Geometry, Plane · Geometry, Solid
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