Plane Geometry: With Problems and ApplicationsAllyn and Bacon, 1910 - 280 páginas |
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Página 54
... diagonal of a quadrilateral is a segment joining two opposite vertices , as AC and BD . Quadrilaterals which have a reentrant angle , such as LBCD , and those in which D C B C A B A D two sides intersect , such as AB and CD , are not ...
... diagonal of a quadrilateral is a segment joining two opposite vertices , as AC and BD . Quadrilaterals which have a reentrant angle , such as LBCD , and those in which D C B C A B A D two sides intersect , such as AB and CD , are not ...
Página 55
... diagonal AC . Prove △ ABC ≃ △ ACD and compare corresponding sides . What determines which are corresponding sides ? 140 . EXERCISES . 1. Show that a diagonal of a parallelogram divides it into two congruent triangles . 2. Give the ...
... diagonal AC . Prove △ ABC ≃ △ ACD and compare corresponding sides . What determines which are corresponding sides ? 140 . EXERCISES . 1. Show that a diagonal of a parallelogram divides it into two congruent triangles . 2. Give the ...
Página 56
... diagonals of a parallelogram bi- sect each other . D C 4 1 0 2 A 3 B Given ABCD with its diagonals meeting at the point O ... diagonal AC . In the A ABC and ADC determine whether any test for congruence applies , and if so compare ...
... diagonals of a parallelogram bi- sect each other . D C 4 1 0 2 A 3 B Given ABCD with its diagonals meeting at the point O ... diagonal AC . In the A ABC and ADC determine whether any test for congruence applies , and if so compare ...
Página 57
... diagonal ? If so , draw it and give the proof . 145 . EXERCISES . 1. Prove that if the diagonals of a quadrilateral bisect each other it is a parallelogram . What is the converse of this proposition ? 2. Show that if two intersecting ...
... diagonal ? If so , draw it and give the proof . 145 . EXERCISES . 1. Prove that if the diagonals of a quadrilateral bisect each other it is a parallelogram . What is the converse of this proposition ? 2. Show that if two intersecting ...
Página 58
... diagonals of a parallelo- gram are equal , the figure is a rectangle . D 4 3 A C 2 1 B Given ABCD with AC = BD ... diagonal . 3. Prove that the diagonals of a square are perpendicular to each other . 4. Prove that the diagonals of ...
... diagonals of a parallelo- gram are equal , the figure is a rectangle . D 4 3 A C 2 1 B Given ABCD with AC = BD ... diagonal . 3. Prove that the diagonals of a square are perpendicular to each other . 4. Prove that the diagonals of ...
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Términos y frases comunes
ABCD acute angle adjacent angles altitude angle formed angles are equal apothem axes of symmetry axioms base bisects called central angle chord circle tangent circumscribed coincide congruent corresponding sides Definition diagonal diameter distance divided dodecagon Draw drawn equal angles equal circles equiangular equilateral triangle EXERCISES exterior angle figure Find the area Find the locus Find the radius fixed point geometric Give the proof given point given segment given triangle Hence hypotenuse hypothesis inches inscribed intersection isosceles trapezoid isosceles triangle l₁ length line-segment measure meet middle points number of sides Outline of Proof parallel lines parallelogram perigon perimeter plane proof in full quadrilateral radii ratio rectangle regular hexagon regular octagon regular polygon rhombus right angles right triangle secant semicircle Show shown square straight angle straight line subtend SUGGESTION THEOREM trapezoid triangle ABC vertex vertices width
Pasajes populares
Página 223 - If two triangles have two sides of the one equal to two sides of the other...
Página 41 - An exterior angle of a triangle is equal to the sum of the two opposite interior angles.
Página 121 - Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.
Página 60 - The straight line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of it 46 INTERCEPTS BY PARALLEL LINES.
Página 182 - The areas of two regular polygons of the same number of sides are to each other as the squares of their radii, or as the squares of their apothems.
Página 161 - The formula states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the base and altitude.
Página 227 - Find the locus of a point such that the difference of the squares of its distances from two fixed points is a constant.
Página 210 - The area of a rectangle is equal to the product of its base and altitude.
Página 31 - Kuclid divided unproved propositions into two classes: axioms, or "common notions," which are true of all things, such as, " If things are equal to the same thing they are equal to each other"; and postulates, which apply only to geometry, such as,