Elements of Geometry |
From inside the book
Results 1-5 of 25
Page vi
... altitude x , will afford an obvious illustration of the axiomatic truth contained in [ 4 ] , page 88. If x increase and approach the altitude a as a limit , the area of the rec- tangle increases and approaches the area of the rectangle ...
... altitude x , will afford an obvious illustration of the axiomatic truth contained in [ 4 ] , page 88. If x increase and approach the altitude a as a limit , the area of the rec- tangle increases and approaches the area of the rectangle ...
Page 38
... Altitude of a triangle is the perpendicular distance from the vertex to the base , or the base produced . 94. DEF . The Exterior angle of a triangle is the angle in- cluded between a side and an adjacent side produced , as CBD . 95. DEF ...
... Altitude of a triangle is the perpendicular distance from the vertex to the base , or the base produced . 94. DEF . The Exterior angle of a triangle is the angle in- cluded between a side and an adjacent side produced , as CBD . 95. DEF ...
Page 59
... Altitude of a parallelogram or trapezoid is the perpendicular distance between its bases . 132. DEF . The Diagonal of a quadrilateral is a straight line joining any two opposite vertices . PROPOSITION XXXVIII . THEOREM . 133. The ...
... Altitude of a parallelogram or trapezoid is the perpendicular distance between its bases . 132. DEF . The Diagonal of a quadrilateral is a straight line joining any two opposite vertices . PROPOSITION XXXVIII . THEOREM . 133. The ...
Page 65
... . § 66 Q. E. D. 141. COROLLARY . Two rectangles having the same base and altitude are equal ; for they may be applied to each other and will coincide . PROPOSITION XLV . THEOREM . 142. The straight line which QUADRILATERALS . 65.
... . § 66 Q. E. D. 141. COROLLARY . Two rectangles having the same base and altitude are equal ; for they may be applied to each other and will coincide . PROPOSITION XLV . THEOREM . 142. The straight line which QUADRILATERALS . 65.
Page 117
... altitude , and C the angle at the base . It is required to construct a △ having the base equal to o , the altitude equal to m , and an at the base equal to C. Take A B equal to o . At the point A , draw the indefinite line A R , making ...
... altitude , and C the angle at the base . It is required to construct a △ having the base equal to o , the altitude equal to m , and an at the base equal to C. Take A B equal to o . At the point A , draw the indefinite line A R , making ...
Other editions - View all
Common terms and phrases
A B C D AABC AACB AB² ABCD adjacent angles apothem arc A B base and altitude BC² centre centre of symmetry circumference circumscribed construct a square COROLLARY decagon diagonals diameter divided Draw equal arcs equal distances equal respectively equiangular equiangular polygon equilateral equilateral polygon exterior angles figure given circle given line given polygon given square homologous sides hypotenuse intersecting isosceles Let A B Let ABC line A B measured by arc middle point number of sides parallelogram perpendicular plane polygon ABC polygon similar PROBLEM prove Q. E. D. PROPOSITION quadrilateral radii radius equal ratio rect rectangles regular inscribed regular polygon required to construct right angles right triangle SCHOLIUM segment semicircle similar polygons subtend symmetrical with respect tangent THEOREM triangle ABC vertex vertices
Popular passages
Page 40 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Page 126 - To describe an isosceles triangle having each of the angles at the base double of the third angle.
Page 136 - The first of four magnitudes is said to have the same ratio to the second which the third has to the fourth, when...
Page 207 - Construct a rectangle having the difference of its base and altitude equal to a given line, and its area equivalent to the sum of a given triangle and a given pentagon.
Page 202 - In any proportion, the product of the means is equal to the product of the extremes.
Page 142 - If a line divides two sides of a triangle proportionally, it is parallel to the third side.
Page 175 - Any two rectangles are to each other as the products of their bases by their altitudes.
Page 72 - Every point in the bisector of an angle is equally distant from the sides of the angle ; and every point not in the bisector, but within the angle, is unequally distant from the sides of the angle.
Page 73 - A CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
Page 146 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.