## Elements of Geometry |

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altitude Analysis angle approach axis base bisect bisector called centre chord circle circumference circumscribed coincide common cone construct convex corresponding curve cylinder Definitions described determine diameter diedral difference direction distance draw drawn edges element ellipse equal equally distant equivalent erected established Exercises expression extremities faces fall feet figure Find the locus fixed formed four Geometry given given line given point greater Hence included increased inscribed intersection joining less limit Lune measure middle point moved NOTE oblique opposite parabola parallel pass perimeter perpendicular placed plane poles polygon portion position prism PROBLEM projection pyramids radius ratio rectangle regular relations remain represent revolved right angle rotation secant segment separated Show sides similar space sphere spherical triangle square straight line student suggests surface tangent THEOREM third vertex vertices volume

### Popular passages

Page 27 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.

Page 28 - If two triangles have two sides and the included angle of one equal to two sides and the included angle of the other, each to each, the other homologous parts are also equal, and the triangles are equal.

Page 19 - The sum of two sides of a triangle is greater than the third side, and their difference is less than the third side.

Page 174 - Find the locus of a point which moves so that the sum of its distances from two vertices of an equilateral triangle shall equal its distance from the third.

Page 174 - Find the equation of the locus of a point which moves so that the sum of the squares of its distances from the x- and z-axes equals 4.

Page 102 - The sum of the squares of the sides of any quadrilateral is equal to the sum of the squares of the diagonals plus four times the square of the line joining the middle points of the diagonals.

Page 293 - F') ; the diameter drawn through them is called the major axis, and the perpendicular bisector of this diameter the minor axis. It is also defined as the locus of a point which moves so that the ratio of its distance from a fixed point...

Page 132 - A conic is the locus of a point which moves in a plane so that the ratio of its...

Page 135 - The areas of circles are to each other as the squares of their radii.