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 書籍 Prove that parallelograms on the same base and between the same parallels are equal... の書籍検索結果 159 件中 1 - 10 件目
Prove that parallelograms on the same base and between the same parallels are equal in area.
The Elements of Plane Geometry ... - 101 ページ
Association for the improvement of geometrical teaching 著 - 1884

## Elementary Illustrations of the Celestial Mechanics of Laplace: Part the ...

Pierre Simon marquis de Laplace, Thomas Young - 1821 - 344 ページ
...DCB (105), and A BC is common, therefore they are equal (102), and AB=CD, and AC=BD. 115. THEOREM. Parallelograms on the same base, and between the same parallels, are equal. ABC __ T> Since AB=CD, botli being cqnal to EF, AC=BD (15, or 16), and the triangle AEC is equiangular...

## Transactions of the Cambridge Philosophical Society

...with the first twenty-six propositions of Euclid, and not till then, it becomes evident to him, that parallelograms on the same base and between the same parallels are equal ; and he cannot even conceive the contrary. When he has a little further cultivated his geometrical...

## Dialogues on the First Principles of the Newtonian System, 第 4 巻

Walter Henry Burton - 1828 - 68 ページ
...ix. jj_ The next proposition is very important, and the truth of it is not obvious at first sight. Parallelograms on the same base, and between the same parallels, are equal. A.. I perceive that it is so in your first figure, where the diagonal of one parallelogram serves for...

## Elements of geometry: Being chiefly a selection from Playfair's geometry

John Playfair - 1829 - 186 ページ
...the figure is a parallelogram, therefore the opposite angles are equal. PROPOSITION XXXV. THEOREM. Parallelograms on the same base, and between the same parallels, are equal to one another; that is, their surfaces are equal. Let the parallelograms ABCD, DBCF be on the same...

## The Elements of geometry [Euclid book 1-3] in general terms, with ..., 第 3 部

Euclides - 1833
...other, as being together with these equal angles = to two right angles (prop. 29.) PROP. 35, THEOR. Parallelograms on the same base and between the same parallels are equal. Connect the sides opposite the base, (if necessary,) then there are two triangles formed (viz. the...

## The Philosophy of Morals: An Investigation by a New and Extended Analysis of ...

Alexander Smith - 1835
...the mathematicians teach us that the three angles of a triangle are equal to two right angles ; that parallelograms on the same base, and between the same parallels, are equal, and the like ; and they likewise teach us why this is true ; ie they shew how these truths necessarily...

## The philosophy of morals

Alexander Smith (M.A.) - 1835
...the mathematicians teach us that the three angles of a triangle are equal to two right angles ; that parallelograms on the same base, and between the same parallels, are equal, and the like ; and they likewise teach us why this is true ; ie they shew how these truths necessarily...

## A System of Popular Geometry: Containing in a Few Lessons So Much of the ...

George Darley - 1836 - 128 ページ
...common to the two triangles ABC, BDC. Hence, by ART. 7, these triangles are equal. This, &c. ART. 23. Parallelograms on the same base, and between the same parallels, are equal. A JS D IT Let A BCD, EBCF, be two parallelograms on the same base BC, and between the same parallels...

## The works of William Cowper, with a life of the author, by the editor R. Southey

Robert Southey - 1843
...are either two right angles, or are together equal to two right angles. 2. Define a parallelogram. Parallelograms on the same base and between the same parallels are equal to one another. Shew that if any quadrilateral figure be bisected by both its diagonals it is a parallelogram....

## Proceedings

...point in the given line. GEOMETRY -3D CLASS. Define a parallelogram, and similar figures. Prove that parallelograms on the same base and between the same parallels are equal. The square on one side of a triangle is equal to the squares on the other two sides, what kind of a...