The Elements of Plane Geometry ...W.S. Sonnenschein and Company, 1884 |
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Αποτελέσματα 1 - 5 από τα 34.
Σελίδα 15
... DEF . 6. A plane surface , or plane , is a surface in which any two points being taken the straight line that joins them lies wholly in that surface . GEOMETRICAL AXIOMS . 1. Magnitudes that can be made to The Straight Line.
... DEF . 6. A plane surface , or plane , is a surface in which any two points being taken the straight line that joins them lies wholly in that surface . GEOMETRICAL AXIOMS . 1. Magnitudes that can be made to The Straight Line.
Σελίδα 24
... joining the vertices of any angles of a polygon which have not a common arm . DEF . 25. The perimeter of a rectilineal figure is the sum of its sides . DEF . 26. A quadrilateral is a polygon of four sides , a pentagon one of five sides ...
... joining the vertices of any angles of a polygon which have not a common arm . DEF . 25. The perimeter of a rectilineal figure is the sum of its sides . DEF . 26. A quadrilateral is a polygon of four sides , a pentagon one of five sides ...
Σελίδα 30
... join BE , and produce BE to F , making EF equal to BE , join FC . Then in the triangles ECF , EAB , the side 30 THE ELEMENTS OF PLANE GEOMETRY .
... join BE , and produce BE to F , making EF equal to BE , join FC . Then in the triangles ECF , EAB , the side 30 THE ELEMENTS OF PLANE GEOMETRY .
Σελίδα 33
... joining the vertex to any point in the base , and using Theor . 9 twice . THEOR . 11. If two sides of a triangle are ... join CD . Then because AD is equal to AC , therefore the angle ADC is equal to the angle ACD ; I. 7 . but the angle ...
... joining the vertex to any point in the base , and using Theor . 9 twice . THEOR . 11. If two sides of a triangle are ... join CD . Then because AD is equal to AC , therefore the angle ADC is equal to the angle ACD ; I. 7 . but the angle ...
Σελίδα 35
... join CD . Because AD is equal to AC , therefore the angle ACD is equal to the angle ADC ; but the angle BCD is greater than the angle ACD , I. 7 . Ax . a . therefore the angle BCD is also greater than the angle ADC , that is , than the ...
... join CD . Because AD is equal to AC , therefore the angle ACD is equal to the angle ADC ; but the angle BCD is greater than the angle ACD , I. 7 . Ax . a . therefore the angle BCD is also greater than the angle ADC , that is , than the ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
AB is equal ABCD AC is equal adjacent angles adjoining sides alternate angle angle ABC angle ACB angle AFG angle BAC angle CAB angle DEF angle EDF angle FGD angles are equal angles equal BA and AC base BC bisectors bisects centre circle cutting Constr construct a triangle contrapositive diagonal equal angles equal to AC exterior angle find the locus Geometry given angle given point given straight line greater Hence hypotenuse identically equal interior opposite angle isosceles triangle less Let ABC meet middle point obtuse angle opposite sides parallel straight lines parallelogram perpendicular point equidistant Prob produced quadrilateral radius rectangle contained rectangle whose base right angles right-angled triangle shew side AB side AC side DF sides equal square on AC squares on AB straight angle straight line drawn Theorem trapezium triangle ABC triangle DEF triangles are identically twice the rectangle vertex
Δημοφιλή αποσπάσματα
Σελίδα 27 - 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.
Σελίδα 70 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Σελίδα 56 - ... is equal to twice as many right angles as the polygon
Σελίδα 101 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Σελίδα 35 - Any two sides of a triangle are together greater than the third side.
Σελίδα 26 - The lines drawn from the extremities of the base of an isosceles triangle to the middle points of the opposite sides are equal.
Σελίδα 70 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 85 - The locus of a point at a given distance from a given point is the circumference described from the point with the given distance as radius.
Σελίδα 42 - 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.
Σελίδα 110 - Iff a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.