Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 18
qual. 6. Things which are double of equal things, are equal toeach other. 7. Things which are halves of the same thing, are equal toeach other. 8. The whole is greater than any of its parts 9. The whole is equal to the sum of all its parts. 10. All right angles are equal to each other. 11. A… … THEOREM I. Every diameter of a circle divides the circumference into tvn>equal parts. Let ADBE be the circumference of acircle, and ACB a diameter: then willthe part ADB be equal to the part AEB. For, suppose the part AEB to be turn-ed around AB, until it shall fall on thepart ADB. The curve AEB…
Geometry · Plane trigonometry
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