Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 86
the vertical A are equal.§77. 6. Same reason as 4. 7. If one str. line meets an- other str. line, the sumof the two adj. ^ is 2rt. A. § 65. 8. Substituting Z1 for its equal Z 2. nuutv 1 fb Argument 9. Z5=Z4.10. .-. Zl + Z5 = 2 rt. A Q.E.D. Reasons 9. Same reason as 5.10. Substituting Z5 for…
Geometry, Plane · Geometry, Solid
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