Books Books
A plane angle is the inclination of two lines to one another* in a plane, which meet together, but are not in the same direction.
A course of practical geometry for mechanics - Page 8
by William Pease - 1843 - 68 pages

Euclid's Elements of Geometry,: From the Latin Translation of Commandine. To ...

Euclid, John Keill - Geometry - 1733 - 444 pages
...of a Superficies are Lines. VII. A Plane Superficies, is that which lietb evenly between its Lines. VIII. A Plane Angle, is the Inclination of two Lines to one another in the fame Plane, which touch each other, but do not both lie in the fame Right Line. IX. If the Lines...

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1762 - 488 pages
...which any two points being taken, the . „ ftraight line between them lies wholly in that fuperficies. VIII. " A plane angle is the inclination of two lines...^ " plane, which meet together, but are not in the fame direction." IX. A plane rectilineal angle is the inclination of two ftraicrht lines to one another,which...

The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - Trigonometry - 1775 - 534 pages
...two points being taken, See N. the ftraight line between them lies wholly in that fuperficies. vra. " A plane angle is the inclination of two lines to one another See N; " in a plane, which meet together, but are not in the fame " direction." IX. A plane rectilineal...

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1781 - 534 pages
...any two points being taken, s*o N. the fbraight line between them lies wholly in that fuperficies. VIII. " A plane angle is the inclination of two lines to one another in a Se* N. " plane, wnich meet together, but are not in the fame direction." IX. A plane rectilineal angle...

The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 552 pages
...points being takenisee NT. the ftraight line between them lies wholly in that fuperficies. VIII. «f A plane angle is the inclination of two lines to one another See N. " in a plane, which meet together, but are not in the fame " direction." IX. A plane rectilineal...

Euclid's Elements of Geometry: From the Latin Translation of Commandine, to ...

John Keill - Geometry - 1782 - 476 pages
...a Superficies are Lines, VII. A •plane Superficies is that which lieth e-vtnfy between its Lines. VIII. A plane Angle is the Inclination of two Lines to one another in the fame Plane, which touch each other, but do not bcth lie in the fame Right Line. IX. If the Lines...

The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804 - 530 pages
...any two points being taken, See K. the ftraight line between them lies wholly in that fuperficies. ^ VIII. « A plane angle is the inclination of two lines to one another in a See N. " plane, which meet together, but are not in the fame direction." IX. i A plane rectilineal...

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 546 pages
...any two points being taken, See N. the straight line between them lies wholly in that superficies. VIII. •- A plane angle is the inclination of two lines to one another See N. " in a plane, which meet together, but are not in the same " direction." IX. A plane rectilineal...