New Plane and Solid Geometry

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Seite 104 - The projection of a point on a line is the foot of the perpendicular from the point to the line. Thus A
Seite 161 - The first and last terms of a proportion are called the extremes, and the two middle terms are called the means.
Seite 118 - In the same circle, or in equal circles, if two arcs are equal, their central angles are equal; and conversely.
Seite 147 - To draw a tangent to a given circle from a given point.
Seite 202 - II, cor. 1. 2. The area of a rectangle equals the product of its base and altitude. That is, the number which represents Its square units of area is the product of the two numbers which represent its base and altitude. For in prop. II, if R' = 1, the square unit of area, then a' and 6' must each equal 1, the unit of length.
Seite 186 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Seite 317 - A plane surface, or a plane, is a surface in which, if any two points are taken, the straight line joining these points lies wholly in the surface.
Seite 39 - If two triangles have two sides of the one respectively equal to two sides of the other, and the included angles unequal, the third sides are unequal, and the greater third side belongs to the triangle having the greater included angle.
Seite 46 - Two intersecting straight lines cannot both be parallel to the same straight line.
Seite 268 - Theorem. If each of two intersecting planes is perpendicular to a third plane, their line of intersection is also perpendicular to that plane. Given two planes, Q, R, intersecting in OP, and each perpendicular to plane M.

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