Plane GeometryCharles E. Merrill Company, 1904 - 372 σελίδες |
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Σελίδα 65
... ° , find the vertex angle . Ex . 10. An exterior angle at the base of an isosceles triangle is 102 ° , find all the angles of the triangle . E QUADRILATERALS 143. A quadrilateral is a portion of a plane PARALLEL LINES 65.
... ° , find the vertex angle . Ex . 10. An exterior angle at the base of an isosceles triangle is 102 ° , find all the angles of the triangle . E QUADRILATERALS 143. A quadrilateral is a portion of a plane PARALLEL LINES 65.
Σελίδα 66
Fletcher Durell. QUADRILATERALS 143. A quadrilateral is a portion of a plane bounded by four straight lines . The sides of a quadrilateral are the bounding lines ; the angles are the angles made by the bounding lines ; the vertices are ...
Fletcher Durell. QUADRILATERALS 143. A quadrilateral is a portion of a plane bounded by four straight lines . The sides of a quadrilateral are the bounding lines ; the angles are the angles made by the bounding lines ; the vertices are ...
Σελίδα 67
... quadrilateral with three acute angles and one ob- tuse angle . Ex . 2. Is every rhombus a rhomboid ? Is every rhomboid a rhombus ? Ex . 3. What is the difference between a square and a rhombus ? What properties do they have in common ...
... quadrilateral with three acute angles and one ob- tuse angle . Ex . 2. Is every rhombus a rhomboid ? Is every rhomboid a rhombus ? Ex . 3. What is the difference between a square and a rhombus ? What properties do they have in common ...
Σελίδα 69
... quadrilateral ABCD in which AB = CD_and BC = AD . To prove ABCD a C Proof . Draw the diagonal AC . Then , in the ... quadrilateral whose opposite sides are || ) . Q. E. D. PROPOSITION XXXV . THEOREM 160. If two sides of a QUADRILATERALS 69.
... quadrilateral ABCD in which AB = CD_and BC = AD . To prove ABCD a C Proof . Draw the diagonal AC . Then , in the ... quadrilateral whose opposite sides are || ) . Q. E. D. PROPOSITION XXXV . THEOREM 160. If two sides of a QUADRILATERALS 69.
Σελίδα 70
Fletcher Durell. PROPOSITION XXXV . THEOREM 160. If two sides of a quadrilateral are equal and par- allel , the other two sides are equal and parallel and the figure is a parallelogram . B Given the quadrilateral ABCD in which BC = and ...
Fletcher Durell. PROPOSITION XXXV . THEOREM 160. If two sides of a quadrilateral are equal and par- allel , the other two sides are equal and parallel and the figure is a parallelogram . B Given the quadrilateral ABCD in which BC = and ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acute angle adjacent angles altitude apothem base bisects chord circumference circumscribed circumscribed circle coincide construct a square Construct a triangle denoted diagonal diameter divided draw a line equal angles equal circles equiangular polygon equidistant equilateral triangle EXERCISES exterior angle figure Find the area Find the radius geometric given angle given circle given line given point given triangle greater Hence homologous sides hypotenuse inscribed angle inscribed polygon intersect isosceles trapezoid isosceles triangle LAOB length Let the pupil line drawn median method midpoint number of sides parallel lines parallelogram perimeter plane PROBLEM produced Prop pupil supply Q. E. D. Ex Q. E. D. PROPOSITION quadrilateral radii ratio rectangle regular inscribed regular polygon rhombus right angles right triangle secant segments tangent THEOREM third side trapezoid triangle ABC vertex vertex angle vertices
Δημοφιλή αποσπάσματα
Σελίδα 82 - Prove analytically that the medians of a triangle meet in a point. 70. Prove analytically that the perpendiculars from the vertices of a triangle to the opposite sides meet in a point.
Σελίδα 88 - The median to the base of an isosceles triangle is perpendicular to the base.
Σελίδα 103 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the center.
Σελίδα 211 - If from a point without a circle a secant and a tangent are drawn, the tangent is the mean proportional between the whole secant and its external segment.
Σελίδα 78 - The line joining the midpoints of two sides of a triangle is parallel to the third side and equal to one-half of it.
Σελίδα 103 - A chord is a straight line joining the extremities of an arc.
Σελίδα 47 - If two triangles have two sides of one equal respectively to two sides of the other...
Σελίδα 114 - In the same circle or in equal circles, if two chords are unequal, they are unequally distant from the center, and the greater chord is at the less distance.
Σελίδα 315 - Find the area of a regular hexagon inscribed in a circle whose diameter is twelve inches.
Σελίδα 241 - If two triangles have an angle of one equal to an angle of the other, and...