The Elements of Plane Geometry ...W.S. Sonnenschein and Company, 1884 |
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Resultat 1-5 av 23
Side 21
... shew that the other three angles are also right angles . * Ex . 2. The bisectors of the adjacent angles which one straight line makes with another include a right angle . THEOR . 3. If the adjacent angles made by one straight line with ...
... shew that the other three angles are also right angles . * Ex . 2. The bisectors of the adjacent angles which one straight line makes with another include a right angle . THEOR . 3. If the adjacent angles made by one straight line with ...
Side 26
... points B and D are taken , and on the other arm points C and E , such that AB is equal to AC , and AD to AE : shew that BE is equal to CD . THEOR . 6. If two triangles have two angles of 26 THE ELEMENTS OF PLANE GEOMETRY .
... points B and D are taken , and on the other arm points C and E , such that AB is equal to AC , and AD to AE : shew that BE is equal to CD . THEOR . 6. If two triangles have two angles of 26 THE ELEMENTS OF PLANE GEOMETRY .
Side 31
... Shew that the sum of the angles of the triangle FBC is equal to the sum of the angles of the triangle ABC . THEOR . 10. Any two angles of a triangle are together less than two right angles . Let ABC be a triangle : B Д then shall any ...
... Shew that the sum of the angles of the triangle FBC is equal to the sum of the angles of the triangle ABC . THEOR . 10. Any two angles of a triangle are together less than two right angles . Let ABC be a triangle : B Д then shall any ...
Side 36
... shew that the sum of OA , OB , and OC is greater than half the perimeter of the triangle . Ex . 20. The perimeter of a quadrilateral is greater than the sum , and less than twice the sum of the diagonals . THEOR . 14. If from the ends ...
... shew that the sum of OA , OB , and OC is greater than half the perimeter of the triangle . Ex . 20. The perimeter of a quadrilateral is greater than the sum , and less than twice the sum of the diagonals . THEOR . 14. If from the ends ...
Side 39
... Shew from Theor . 15 that the hypotenuse is the greatest side of a right - angled triangle . THEOR . 16. If two triangles have two sides of the one equal to two sides of the other , each to each , but the included angles unequal , then ...
... Shew from Theor . 15 that the hypotenuse is the greatest side of a right - angled triangle . THEOR . 16. If two triangles have two sides of the one equal to two sides of the other , each to each , but the included angles unequal , then ...
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The Elements of Plane Geometry Association for the Improvement of Geometrical Teaching Uten tilgangsbegrensning - 1903 |
Vanlige uttrykk og setninger
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
Populære avsnitt
Side 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.
Side 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.
Side 101 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Side 35 - Any two sides of a triangle are together greater than the third side.
Side 26 - The lines drawn from the extremities of the base of an isosceles triangle to the middle points of the opposite sides are equal.
Side 70 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Side 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.
Side 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.
Side 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.