First lessons in Plane Geometry. Together with an application of them to the solution of problems, etcCarter and Hendee, 1830 - 12 σελίδες |
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Σελίδα 5
... perpendicular to each other , Any angle smaller than a right angle , is called acute , and when greater than a right angle , an obtuse angle.f * Legendre calls all geometrical figures polygons . † Angles are measured by an arc of a ...
... perpendicular to each other , Any angle smaller than a right angle , is called acute , and when greater than a right angle , an obtuse angle.f * Legendre calls all geometrical figures polygons . † Angles are measured by an arc of a ...
Σελίδα 10
... perpendicular to each other , the sector , is called a quadrant . A straight line , which , drawn without the circle , and however so far extended in both directions , meets the circumfer- ence only in one point , is called a tangent ...
... perpendicular to each other , the sector , is called a quadrant . A straight line , which , drawn without the circle , and however so far extended in both directions , meets the circumfer- ence only in one point , is called a tangent ...
Σελίδα 14
... perpendicular to each other ? What is the name of a straight line , drawn without the circle , which , extended both ways ever so far , touches the cir- cumference only in one point ? NOTATION AND SIGNIFICATIONS . FOR the sake of ...
... perpendicular to each other ? What is the name of a straight line , drawn without the circle , which , extended both ways ever so far , touches the cir- cumference only in one point ? NOTATION AND SIGNIFICATIONS . FOR the sake of ...
Σελίδα 23
... perpendicular ; namely , all the space on one side of the line AC . Q. Can you prove the same of the sum of the two ... perpendicular to AC , all these angles will be found to occupy the same space as the two right angles , made by the ...
... perpendicular ; namely , all the space on one side of the line AC . Q. Can you prove the same of the sum of the two ... perpendicular to AC , all these angles will be found to occupy the same space as the two right angles , made by the ...
Σελίδα 24
... perpendicular to each other , what remark can you make in relation to the angles d , c- b , e , a ? A. That each of these an- gles will be a right angle . Q , And what is the sum of all the angles , a , b , c , d , e , f , around the ...
... perpendicular to each other , what remark can you make in relation to the angles d , c- b , e , a ? A. That each of these an- gles will be a right angle . Q , And what is the sum of all the angles , a , b , c , d , e , f , around the ...
Άλλες εκδόσεις - Προβολή όλων
First Lessons in Plane Geometry: Together with an Application of Them to the ... Francis Joseph Grund Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2009 |
First Lessons in Plane Geometry: Together with an Application of Them to the ... Francis Joseph Grund Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2009 |
Συχνά εμφανιζόμενοι όροι και φράσεις
adjacent angles angle ABC angle ACB angle opposite angle x basis and height bisected called centre chord circum circumference circumscribed circle consequently construct the triangle DEMON diagonal diameter draw the lines equal angles exterior angle figure ABCDEF found by multiplying fourth term geometrical figures geometrical proportion given angle given circle given straight line given triangle hypothenuse isosceles triangle line AB line AC line CD line MN LUDOLPH VAN CEULEN mean proportional number of sides parallel lines parallelogram perpendicular points of division PROBLEM prove quadrilateral Query 11 radii radius ratio rectilinear figure regular polygon ABCDEF remaining sides Remark right angles right-angular triangle Sect semicircle side AB side AC similar triangles smaller SOLUTION square feet square inches square seconds tangent third line three angles three sides trapezoid trian triangle ABC triangle are equal vertex zoid
Δημοφιλή αποσπάσματα
Σελίδα 195 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
Σελίδα 94 - If two triangles have two sides of the one equal to two sides of the other, each to each, but the...
Σελίδα 211 - HDG, the corresponding sides are proportional (page 70, 4thly) ; therefore we have the proportion ED : DG =AD : HD (II.) This last proportion has the first ratio common with the first proportion ; consequently the two remaining ratios are in a geometrical proportion (Theory of Prop., Prin. 3d) ; that is, we have AD : HD = DG: BD; and as, in...
Σελίδα 173 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Σελίδα 176 - The perimeters of two regular polygons of the same number of sides, are to each other as their homologous sides, and their areas are to each other as the squares of those sides (Prop.
Σελίδα 175 - The side of a regular hexagon inscribed in a circle is equal to the radius of the circle.
Σελίδα 129 - Now, since the areas of similar polygons are to each other as the squares of their homologous sides...