 | Euclides - 1846 - 292 pages
...right angles. Let the straight line AB make with CD, upon one side of it, the angles CBA, ABD : these are either two right angles, or are together equal to two right angles. For if the angle CBA be equal A to ABD, each of them is a right I \ ^ angle (Def. 10) : But if not,... | |
 | Euclides - 1847 - 128 pages
...proved. 35 PROP. XIII. THEOR. GEN. ENUN. — The angles, which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. PART. ENUN. — Let the st. line AB make with CD, upon one side of it, Fig. 1. the Zs CBA, ABD; then... | |
 | John Playfair - Euclid's Elements - 1847 - 340 pages
...PROP. XIII. THEOR. i The angles which one straight line makes with another upon one side of it, art either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two right angles, or are... | |
 | Euclides - 1848 - 52 pages
...given point without it. PROP. XIII. THEOREM. The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. PROP. XIV. THEOREM. If, at a point in a straight line, two other straight lines, upon the opposite... | |
 | Great Britain. Council on Education - Education - 1848 - 596 pages
...and an equilateral triangle. Prove that the angles, which one straight line makes with another upon one side of it are either two right angles, or are together equal to two right angles. 2. The angles at the base of an isosceles triangle are equal to each other. 3. Define parallel straight... | |
 | J. Goodall, W. Hammond - 1848 - 390 pages
...and an equilateral triangle. Prove that the angles, which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. 2. The angles at the base of an isosceles triangle are equal to each other. 3. Define parallel straight... | |
 | Great Britain. Committee on Education - 1848 - 606 pages
...and an equilateral triangle. Prove that the angles, which one straight line makes with another upon one side of it are either two right angles, or are together equal to two right angles. 2. The angles at the base of an isosceles triangle are equal to each other. 3. Define parallel straight... | |
 | Elias Loomis - Conic sections - 1849 - 252 pages
...the angle EGH, PROPOSITION II. THEOREM. 77/o angles which one straight line makes with another, upon one side of it, are either two right angles, or are together equal to two right angles. if not, suppose the line BE to be drawn from the point B, perpendicular to CD; then will each of the... | |
 | Euclid, Thomas Tate - 1849 - 120 pages
...right angles. Let the straight line AB make with CD, upon one side of it, the angles CBA, ABD; these are either two right angles, or are together equal to two right angles. For, if the angle CBA be equal to ABD, each of them is a right (Def. 10.) angle; but, if not, from... | |
 | Education - 1850 - 488 pages
...Order of Jesuits. GEOMETRY. SECTION I. 1. The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. 3. If two triangles have two sides of the one equal to two sides of the other, each to each, but the... | |
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The angles which one straight line makes with another upon one tide of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two right... 
