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CD; therefore AC is a parallelogram. In like manner, it may be proved that each of the figures CE, FG, GB, BF, AE, is a parallelogram...
Euclid's Elements of Geometry: From the Latin Translation of Commandine. To ... - Page 210
by Euclid, John Keill - 1723 - 364 pages

## The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841 - 378 pages
...BG, CE, are cut by the plane AC, their common sections AB, CD,* are * 16- H. parallel: and because the two parallel planes BF, AE, are cut by the plane AC, their common sections AD, BC,* are parallel: and AB is parallel to CD; * 16. 11. therefore AC is a parallelogram. In like...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1842 - 332 pages
...CE, are cut by the plane AC, their common sections AB, CD are parallel (14. 2. Sup.). Again, because the two parallel planes BF, AE are cut by the plane AC, their common sections AD, BC are parallel (14. 2. Sup.) : and AB is parallel to CD ; therefore AC is a parallelogram. In...

## Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Euclides - 1845 - 544 pages
...BG, CE are cut by the plane AC, their common sections AB, CD are parallel: (xi. 16.) again, because the two parallel planes BF, AE are cut by the plane AC, their common sections AD, BC are parallel: (xi. 16.) and AB is parallel to CD; therefore AC is a parallelogram. In like manner...

## The First Six, and the Eleventh and Twelfth Books of Euclid's Elements: With ...

Euclid, James Thomson - Geometry - 1845 - 380 pages
...BG, CE are cut by the plane AC, their common sections AB, CD are (XI. 16) parallel. Also, because the parallel planes BF, AE are cut by the plane AC, their common sections AD, BC are parallel: and AB, CD a:e parallel; therefore AC is a parallelogram. In like manner, it may...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1846 - 332 pages
...CE, are cut by the plane AC, their common sections AB, CD are parallel (14. 2. Sup.). Again, because the two parallel planes BF, AE are cut by the plane AC, their common sections AD, BC are parallel (14. 2. Sup.) : and AB is parallel to CD ; therefore AC is a parallelogram. In...

## An elementary course of mathematics, Volume 2

Samuel Hunter Christie - 1847 - 172 pages
...CE, are cut by the plane AC, their common sections AB, CD, are parallel (Prop. 27) : again, because the two parallel planes BF, AE are cut by the plane AC, their common sections AD, BC are parallel (Prop. 27): and AB is parallel to CD; therefore AC is a parallelogram. In like...

## The Elements of Euclid, with many additional propositions, and explanatory ...

Euclides - 1855
...planes BG, CE are cut by the plane AC, their common sections AB, CD are parallel (a): again, because the two parallel planes BF, AE are cut by the plane AC, their common sections AD, BC are parallel (a): and AB is parallel to CD; therefore AC is a parallelogram. In like manner...