| John Playfair - 1842 - 332 Seiten
...that no other point which is not in CA, is the centre ; that is, the centre is in CA. PROP. XX. THEOR. The angle at the centre of a circle is double of the angle at the circumference, upon the same base, that is, upon the' same part of the circumferB Let ABC be... | |
| 1844 - 688 Seiten
...which there fall more than two equal straight lines to the circumference, that point is the centre. 10. The angle at the centre of a circle is double of the angle at the circumference upon the same base. 11. From a given circle, cut off a segment which shall contain... | |
| 1844 - 456 Seiten
...and two of the opposite angles of a four sided figure be equal, that figure is a parallelogram. 5. The angle at the centre of a circle is double of the angle at the circumference, when they stand on the same arc. 6. If the vertical angle of a triangle be bisected... | |
| Euclid - 1845 - 218 Seiten
...centre ; that is, the centre is in CA. Therefore, if a straight line, &c. QED PROPOSITION XX. THEOB. — The angle at the centre of a circle is double of the angle at the circumference upon the same base, that is, upon the same part of the circumference. Let ABC... | |
| Euclid, James Thomson - 1845 - 382 Seiten
...the centre : that is, the centre is in C A. Therefore, if a straight line, &c. PROP. XX. THEOR. — The angle at the centre of a circle is double of the angle at the circumference, upon the same base, that is, upon the same part of the circumference. In the... | |
| Euclides - 1845 - 546 Seiten
...the centre of the circle is in CA. Therefore, if a straight line, &c. QKI). PROPOSITION XX. THEOREM. The angle at the centre of a circle is double of the angle at the circumference upon the same base, that is, upon the same part of the circumference. Let ABC... | |
| Great Britain. Admiralty - 1846 - 128 Seiten
...Cr. of ©ABC; ie the Cr. of ©, is in CA. Therefore, if a str. line, &c. PROP. LV. THEOR. 20. 3Eu. The angle at the centre of a circle is double of the angle at the circumference upon the same arc, that is, upon the same part of the circumference. Fig. 1. A... | |
| Euclides - 1846 - 292 Seiten
...be the centre, that is, the centre is in CA. Wherefore, If a straight line %c. QED PROP. XX. THEOR. The angle at the centre of a circle is double of the angle at the circumference upon the same base, that is, upon the same part of the circumference. Let ABC... | |
| Great Britain. Admiralty - 1846 - 128 Seiten
...Cr. of ©ABC; ie the Cr. of 0, is in CA. Therefore, if a str. line, &c. PROP. LV. THEOR. 20. 3 E U . The angle at the centre of a circle is double of the angle at the circumference upon the same arc, that is, upon the same part of the cir-cumference. Fig. 1.... | |
| Euclid, John Playfair - 1846 - 334 Seiten
...that no other point which is not in CA, is the centre ; that is, the centre is in CA. PROP. XX. THEOR. The angle at the centre of a circle is double of the angle at the circumference, upon the same base, that is, upon the stme part of the cireumferB' Let ABC be... | |
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