Plane and Solid GeometryMacmillan, 1902 - 370 σελίδες |
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Αποτελέσματα 1 - 5 από τα 53.
Σελίδα 4
... four equal angles , each angle is called a right angle , as EOD , DOF , etc. A right angle is half a straight angle . 32. An acute angle is an angle less than a right angle , K B B la 2 FI C A E- FIG . 1 as angle IKH . 33. An obtuse ...
... four equal angles , each angle is called a right angle , as EOD , DOF , etc. A right angle is half a straight angle . 32. An acute angle is an angle less than a right angle , K B B la 2 FI C A E- FIG . 1 as angle IKH . 33. An obtuse ...
Σελίδα 6
... four lines meet in a point so that FIG AOB = 120 ° , and BOC = COD = DOA , find BOC . 17. In Fig . 17 name four pairs of adjacent angles . A = 18. If two lines , AB and CD , intersect in O , making AOC 60 ° , find the other angles . 19 ...
... four lines meet in a point so that FIG AOB = 120 ° , and BOC = COD = DOA , find BOC . 17. In Fig . 17 name four pairs of adjacent angles . A = 18. If two lines , AB and CD , intersect in O , making AOC 60 ° , find the other angles . 19 ...
Σελίδα 11
... four sides , a quadrilateral . TRIANGLES 62. A triangle having three unequal sides is a scalene tri- angle . An isosceles triangle has two of its sides equal . An equilateral triangle has its three sides equal . Scalene Equilateral ...
... four sides , a quadrilateral . TRIANGLES 62. A triangle having three unequal sides is a scalene tri- angle . An isosceles triangle has two of its sides equal . An equilateral triangle has its three sides equal . Scalene Equilateral ...
Σελίδα 14
... four triangles are formed , of which those opposite each other are equal . 73. REMARK . The equality of lines and angles is usually proved by means of equal triangles . Ex . 36. If any point in the perpendicular bisector 14 PLANE GEOMETRY.
... four triangles are formed , of which those opposite each other are equal . 73. REMARK . The equality of lines and angles is usually proved by means of equal triangles . Ex . 36. If any point in the perpendicular bisector 14 PLANE GEOMETRY.
Σελίδα 16
... four points , A , B , C , and D , in a straight line be a point , E , without , then ( 1 ) ZABE > < ACE , ( 2 ) ZABE > △ CED , ( 3 ) ZABE ( See diagram on next nare ) Ex . 44. If in quadrilateral ABCD the diagonals AC 16 PLANE GEOMETRY.
... four points , A , B , C , and D , in a straight line be a point , E , without , then ( 1 ) ZABE > < ACE , ( 2 ) ZABE > △ CED , ( 3 ) ZABE ( See diagram on next nare ) Ex . 44. If in quadrilateral ABCD the diagonals AC 16 PLANE GEOMETRY.
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD altitude angles are equal bisect bisector chord circumference circumscribed cone construct a triangle cylinder diagonals diagram for Prop diameter diedral angles divide draw drawn equiangular equiangular polygon equilateral triangle equivalent exterior angle face angles Find the area Find the radius Find the volume frustum given circle given line given point given triangle Hence HINT homologous homologous sides hypotenuse inches inscribed intersecting isosceles triangle joining the midpoints lateral area lateral edges line joining mean proportional median opposite sides parallel lines parallelogram parallelopiped perimeter perpendicular plane MN polyedral angle polyedron prism PROPOSITION prove Proof quadrilateral radii ratio rectangle regular polygon respectively equal rhombus right angles right triangle SCHOLIUM segment similar triangles sphere spherical polygon spherical triangle square straight line surface tangent THEOREM trapezoid triangle ABC triangle are equal triedral vertex
Δημοφιλή αποσπάσματα
Σελίδα 45 - If two triangles have two sides of one equal respectively to two sides of the other, but the included angle of the first triangle greater than the included angle of the second, then the third side of the first is greater than the third side of the second.
Σελίδα 119 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 180 - 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'.
Σελίδα 31 - The median to the base of an isosceles triangle is perpendicular to the base.
Σελίδα 305 - A cylinder is a solid bounded by a cylindrical surface and two parallel planes; the bases of a cylinder are the parallel planes; and the lateral surface is the cylindrical surface.
Σελίδα 337 - A spherical polygon is a portion of the surface of a sphere bounded by three or more arcs of great circles. The bounding arcs are the sides of the polygon ; the...
Σελίδα 250 - A straight line perpendicular to one of two parallel planes is perpendicular to the other also.
Σελίδα 297 - A truncated triangular prism is equivalent to the sum of three pyramids whose common base is the base of the prism, and whose vertices are the three vertices of the inclined section.
Σελίδα 105 - I. When the given point, A, is in the circumference. HINT. — What is the angle formed by a radius and a tangent at its extremity ? II. When the given point, A, is without the circle. \ Construction. Join A, and 0 the center of the given circle. On OA as a diameter, construct a circumference, intersecting the given circumference in B and C.
Σελίδα 276 - An oblique prism is equivalent to a right prism whose base is a right section of the oblique prism, and whose altitude is equal to a lateral edge of the oblique prism. Hyp. GM is a right section of oblique prism AD', and OM ' a right prism whose altitude is equal to a lateral edge of AD'. To prove AD' =s= GM'. Proof. The lateral edges of GM