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" A circle is a plane figure contained by one line, which is Called the circumference, and is fuch that all ftraight lines drawn from a certain point within the figure... "
Nine Geometricall Exercises: For Young Sea-men, and Others that are Studious ... - Page 3
by William Leybourn - 1704 - 192 pages
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Euclide's Elements: The Whole Fifteen Books Compendiously Demonstrated. With ...

Euclid, Isaac Barrow - 1714 - 536 pages
...is caUed CGA, or AGC. XI. An obtufe angle is that which is greater than a right angle ; as ACO. XII. An acute angle is that which is lefs than a right angle ; as ACB. L Alii. A Limit, or Term, O is the end of any thing. • XIV. A Figure is that which is contained...
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The Young Mathematician's Guide: Being a Plain and Easie Introduction to the ...

John Ward (of Chester.) - 1734 - 478 pages
...that which is Greater than a Angle. Such i* the /frzgte Included between the Lines А С and CB. io. An ACUTE ANGLE is that which is Lefs than a Right Angle: As the Angle Included between the Lines С S and С 2). Thefe Two Angles are generally called OBLIQUE...
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - 1762 - 488 pages
...called a perpendicular to it. • XI. An obtufe angle is that which is greater than a right angle. XII. An acute angle is that which is lefs than a right angle. XIII. " A term or boundary, is the extremity of any thing." XIV. A figure is that which is inclofed...
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The Practice of Perspective: On the Principles of Dr. Brook Taylor: in a ...

Joseph Highmore - 1763 - 258 pages
...C, D, fig- 511. An obtufe angle is that which is greater than a right angle, as E, B, C, fig. 5. 12. An acute angle is that which is lefs than a right angle, as E, B, D, fig-513. A circle is a plain figure comprehended by one line, which is called a circumference,...
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The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - 1775 - 534 pages
...called a perpendicular to it. — XI. An obtufe angle is that which is greater than a right angle. XII. An acute angle is that which is lefs than a right angle. xin. " A term or boundary is the extremity of any thing." XIV. A figure is that which is inclofed by...
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The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 552 pages
...is called a perpendicular to it. XI. An obtufe angle is that which is greater than a right angle. ,. An acute angle is that which is lefs than a right angle. > '.'XIII. , •i. ;. " A term or boundary is the extremity of any thing." At. V« A figure is that...
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The Tutor's Guide: Being a Complete System of Arithmetic; with Various ...

Charles Vyse - 1785 - 350 pages
...denotes the Angle, b. An obtufe Angle is that which is greater than a right Angle, as CAB, (Fig. 3.) An acute Angle is that which is lefs than a right Angle, asDCB, (Fig. 4.) Parrallel Lines are thufe of which every Point of the one is at the fame D1ftance...
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Elements of Geometry: Containing the Principal Propositions in the First Six ...

Euclid - 1789 - 296 pages
...perpendicular to each other. 10. An obtufe angle is that which is greater than a right angle. .11. An acute angle is that which is lefs than a right angle. 12. A : \ 12. A figure is that which is inclofed by one or more boundaries. 13. A circle is a plane...
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The Practical Navigator, and Seaman's New Daily Assistant: Being an Epitome ...

John Hamilton Moore - 1791 - 578 pages
...than a Right Angle, fuch as the Angle included between the Lines А С and С B. - - ; -.. .:. vin. An Acute Angle is that which is lefs than a Right Angle, fuch as the Angle included between the Lines С В and С D ; thefe Angles are called Oblique Angles....
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Elements of Geometry;: Containing the First Six Books of Euclid, with Two ...

Euclid, John Playfair - 1795 - 462 pages
...called a per- , pendicular to it. VJII vra. Ao obtufe angle is that which is greater than a right angle. IX. An acute angle is that which is lefs than a right angle. X. A figure is that which is inclofed by one or more boundaries. XI. A circle is a plane figure contained...
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