| T S. Taylor - 1880 - 152 pages
...(Euclid I. 14). Repeat. — The enunciation of Euc. I. 13 and Axioms 3<z and n. General Enunciation. **If, at a point in a straight line, two other straight lines, on** the opposite sides of it, make the adjacent angles together equal to two right angles, those two straight... | |
| Euclides, Frederick Burn Harvey - Geometry - 1880 - 178 pages
...angle on the right side of the figure. - Ie the double angle on the left side of the figure. PROP. XIV. **THEOREM. If at a point in a straight line, two other straight lines,** upon opposite sides of it, make the adjacent angles together equal to two right angles, then these... | |
| Oxford univ, local exams - 1880 - 394 pages
...superficies, a square, a parallelogram. What is Euclid's axiom about lines which will meet when produced ? 2. **If at a point in a straight line two other straight lines, on** the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight... | |
| Pupil teachers - 1880 - 1494 pages
...of the bisections of the interior and exterior angles at the base are in the same straight line. 14. **If at a point in a straight line two other straight lines,** upon the opposite side of it, make the adjacent angles together equal to two right angles; then these... | |
| William Frothingham Bradbury - Geometry - 1880 - 260 pages
...therefore the sum of all the angles at the point B is equal to four right angles. THEOREM III. 47i **If at a point in a straight line two other straight lines** upon opposite sides of it .make the sum of tfie adjacent angles equal to two right angles, these two... | |
| Education, Higher - 1881 - 504 pages
...If, at a point in a straight line, two other straight lines upon opposite sides of it make the two **adjacent angles together equal to two right angles, these two straight lines** must be in one and the same straight line. After proving this, define every geometrical figure you... | |
| Moffatt and Paige - 1881 - 176 pages
...trapezvum. What is the hypothesis, and what is the conclusion in the enunciation of the 5th proposition 1 2. **If at a point in a straight line, two other straight lines,** upon the opposite sides of it, make the adjacent angles together equal to two right angles ; then these... | |
| Isaac Sharpless - Geometry - 1882 - 286 pages
...Also ABC= CBE +ABE=R+ABE, and ABD = EBD ~ABE=R- ABE. .-. (Ax. 2) ABC+ABD = 2R. 5 BD E Proposition 16. **Theorem. — If at a point in a straight line, two...on opposite sides of it, make the adjacent angles** equal to two right angles, these two lines are in the same straight line. 28 two right angles ; then... | |
| Marianne Nops - 1882 - 278 pages
...DBA, ABC = Z. s CBE, EBD = two rt. L s. Wherefore the angles, &c. — QED PROPOSITION XIV., THEOREM 7. **If at a point in a straight line two other straight lines, on** the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight... | |
| College of preceptors - 1882 - 528 pages
...lines, parallelogram, angle in segment of a circle, rectilinear figure described about a circle. 2. **If at a point in a straight line two other straight lines on** the opposite sides of it m;ike the adjacent angles together equal to two right angles, these two straight... | |
| |