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" The projection of a point on a plane is the foot of the perpendicular drawn from the point to the plane. "
The elements of geometry, in eight books; or, First step in applied logic - Pagina 43
door L J V. Gerard - 1874
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SYLLABUS OF PROPOSITIONS IN GEOMETRY

1899
...oblique straight lines drawn from a point to a straight line meet the line at equal distances from the foot of the perpendicular drawn from the point to the line, they are equal. If they meet the line at unequal distances from the foot of the perpendicular, the...
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Elementary Geometry, Plane and Solid: For Use in High Schools and Academies

Thomas Franklin Holgate - 1901 - 440 pagina’s
...from L and M. Therefore the locus • • • DEFINITIONS 445. The projection of a point upon a plane is the foot of the perpendicular drawn from the point to the plane. The projection of a line upon a plane is the locus of the projections of its points upon the...
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Elementary Geometry, Plane and Solid: For Use in High Schools and Academies

Thomas Franklin Holgate - 1901 - 440 pagina’s
...distance between the base and the opposite vertex. 298. (6) Projection of a Point on a Line — the foot of the perpendicular drawn from the point to the line. 319. (7) Projection of a Given Line-segment on Any Straight Line — the intercept between the projections...
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Mathematics, mechanics, heat

American School (Chicago, Ill.) - 1903
...which have the same area. 190. The projection of a point upon a straight line of indefinite length is the foot of the perpendicular drawn from the point to the line. An entire lino may be said to have a projection upon another line in the same way. 191. A medial line...
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PLANE AND SOLID GEOMETRY

FLETCHER DURELL. PH.D. - 1911
...diameter and the segment of the diameter adjacent to the chord. 344. DEF. The projection of a point upon a line is the foot of the perpendicular drawn from the point to the line. L Af B1 3f P c1 Q Thus, if A A' be perpendicular to LM, A' is the projection of the point A on the...
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Plane Geometry

Fletcher Durell - 1904 - 372 pagina’s
...diameter and the segment of the diameter adjacent to the chord. 344. DEF. The projection of a point upon a line is the foot of the perpendicular drawn from the point to the line. L A' B' If P O' Q Thus, if AA' be perpendicular to LM, A' is the projection of the point A on the line...
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The Elements of Geometry

Walter Nelson Bush, John Bernard Clarke - 1905 - 355 pagina’s
...? Draw figures to illustrate your answers. XIV. PYTHAGOREAN GROUP DEFINITIONS PROJECTION ox A LINE The Projection of a Point on a straight line is the foot of the perpendicular from the point to the line. The line on which the perpendicular is dropped is called the Base of Projection....
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Syllabus of Plane Geometry: (corresponding to Euclid, Book I-VI) ; Prepared ...

Cora Lenore Williams - 1905 - 42 pagina’s
...the squares of two lines is equal to the rectangle of the sum and difference of those lines. Def. 76. The projection of a point on a straight line is the foot of the perpendicular let fall from the point to the straight line. Def. 77. The projection of a finite line on a straight...
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School Science and Mathematics, Volume 9

1909
...about an angle AOB in the present section. 3. PROJECTION. Definition i. The projection of a point P on a straight line is the foot of the perpendicular drawn from P to that straight line. • /O •: . i Definition 2. The projection of a straight line PQ on any...
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Plane and Solid Geometry

Isaac Newton Failor - 1906 - 418 pagina’s
...AB only one plane can be passed -L to MN. QED 572 DEFINITION. The projection of a point upon a plane is the foot of the perpendicular drawn from the point to the plane. 573 DEFINITION. The projection of a line upon a plane is the line which contains the projections...
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