 | Webster Wells, Walter Wilson Hart - Geometry - 1916 - 504 pages
...infinity of planes can be drawn through AB± .aW (§495). 503. The projection of a point on a plane is the foot of the perpendicular drawn from the point to the plane. The projection of a given line on a plane is the line which contains the projections of all... | |
 | Fletcher Durell, Elmer Ellsworth Arnold - Geometry, Solid - 1917 - 220 pages
...oblique straight lines drawn from a point to a straight line meet the line at unequal distances from the foot of the perpendicular drawn from the point- to the line, the more remote is the greater. 146. A parallelogram is a quadrilateral whose opposite sides are parallel.... | |
 | Fletcher Durell, Elmer Ellsworth Arnold - Geometry, Plane - 1917 - 330 pages
...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. Of what theorem is this statement the converse ? A. 2. 3. . PROPOSITION XXI. THEOREM... | |
 | Charles Austin Hobbs - Geometry, Solid - 1921 - 216 pages
...only plane that can be drawn through AB ± toMN. DEFINITIONS. 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 all the points of the... | |
 | Geometry - 100 pages
...from the given point to the other plane. Definition 22 The projection of a point onto a given plane is the foot of the perpendicular drawn from the point to the plane. Definition 23 The projection of a line onto a plane is the set of points which are projections... | |
 | N. P. Bali, N. Ch. Narayana Iyengar - Engineering mathematics - 2004 - 1438 pages
...acute angle between the planes. 4.27. PROJECTION ON A PLANE (0 The projection of a point on a plane is the foot of the perpendicular drawn from the point to the plane. Thus f is the projection of P on the plane. (i'i) The projection of segment of a line is the... | |
 | 130 pages
...that AB2 = AC2 + CD2+DB2 + twice reot. AC.CD + twice rect. AC . DB + twice rect. CD . DB. 93. DEP. 29. The projection of a point on a straight line is the...foot of the perpendicular drawn from the point to the straight line. DBF. 30. The projection of a straight line on a straight line is the portion of the... | |
 | Euclid - 1845 - 336 pages
...is a triangle right-angled at A and AD is an altitude; show that AD2 = rect. BD . DC. 164. DEF. 38. The projection of a point on a straight line is the...foot of the perpendicular drawn from the point to the straight line, produced if necessary. DEF. 39. The projection of a straight line on a straight line... | |
 | Geometry, Solid - 1974 - 324 pages
...given point on a plane is called its projection, or orthogonal projection, on the plane. Similarly the projection of a point on a straight line is the foot of the perpendicular from the point on the line. Thus, if the axes shown in the diagram, (§1), are rectangular, N is the... | |
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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. 
