Plane and Solid GeometryAmerican Book Company, 1899 - 384 σελίδες |
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Σελίδα 84
... Secant of the circle . CD , Fig . 3 , is a secant of the circle . 187. An angle whose vertex is at the center of 84 PLANE GEOMETRY . — BOOK II .
... Secant of the circle . CD , Fig . 3 , is a secant of the circle . 187. An angle whose vertex is at the center of 84 PLANE GEOMETRY . — BOOK II .
Σελίδα 94
... secant ? 2. Draw a tangent to a circle and a radius to the point of contact . What kind of an angle is formed by these lines ? Theorem . A line perpendicular to a radius at its ex- tremity is tangent to the circle ; conversely , a ...
... secant ? 2. Draw a tangent to a circle and a radius to the point of contact . What kind of an angle is formed by these lines ? Theorem . A line perpendicular to a radius at its ex- tremity is tangent to the circle ; conversely , a ...
Σελίδα 108
... secant ; construct an angle equal to this by drawing from the point of tangency a chord parallel to the secant . How does the arc intercepted by the sides of this angle compare with the difference of the arcs intercepted by the sides of ...
... secant ; construct an angle equal to this by drawing from the point of tangency a chord parallel to the secant . How does the arc intercepted by the sides of this angle compare with the difference of the arcs intercepted by the sides of ...
Σελίδα 109
... secant and the circumference a chord parallel to the other secant . How does the arc subtending the inscribed angle compare with the difference of the arcs intercepted by the secants ? What , then , is the measure of the given angle ...
... secant and the circumference a chord parallel to the other secant . How does the arc subtending the inscribed angle compare with the difference of the arcs intercepted by the secants ? What , then , is the measure of the given angle ...
Σελίδα 115
... secant cut each other without a circle ; the intercepted arcs are 94 ° and 32 ° . What is the angle between the tangent and the secant ? Ex . 225. Two chords of a circle intersect and two opposite intercepted arcs are 88 ° and 26 ...
... secant cut each other without a circle ; the intercepted arcs are 94 ° and 32 ° . What is the angle between the tangent and the secant ? Ex . 225. Two chords of a circle intersect and two opposite intercepted arcs are 88 ° and 26 ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD adjacent angles altitude angle formed angles are equal angles compare apothem arc intercepted base bisector bisects called central angle chord circle whose center circumference circumscribed compare in length Construct a triangle Data diagonals diameter dihedral angles distance divide equal circles equidistant equilateral triangle equivalent exterior extremities Find the locus frustum given line given point given straight line Hence homologous homologous sides hypotenuse inscribed angle interior angles intersecting isosceles trapezoid isosceles triangle line drawn measured by arc middle point number of sides opposite sides parallel lines parallelogram parallelopiped pass perimeter perpendicular plane prism produced Proof proportion prove pyramid Q.E.D. Proposition quadrilateral radii radius ratio rect rectangle formed regular polygon respectively rhombus right angles right triangle secant segment similar sphere spherical triangle subtended surface tangent Theorem transversal trapezoid triangle ABC triangles are equal trihedral vertex vertical angle
Δημοφιλή αποσπάσματα
Σελίδα 103 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 147 - Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.
Σελίδα 65 - The line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of the third side.
Σελίδα 45 - After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles...
Σελίδα 62 - From 56 and 57 the pupils should learn that two triangles are equal in every respect (a) when two sides and the included angle of one are equal to two sides and the included angle of the other...
Σελίδα 59 - If the opposite sides of a quadrilateral are equal, the figure is a parallelogram.
Σελίδα 81 - A circle is a plane figure bounded by a curved line, every point of which is equally distant from a point within called the center.
Σελίδα 45 - In an isosceles triangle the angles opposite the equal sides are equal.
Σελίδα 31 - If two parallel lines are cut by a third straight line, the sum of the two interior angles on the same side of the secant line is equal to two right angles.
Σελίδα 88 - In the same circle, or in equal circles, equal chords are equally distant from the center; and, conversely, chords equally distant from the center are equal.