Elementary GeometryJ.B. Lippincott Company, 1893 |
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Αποτελέσματα 1 - 5 από τα 90.
Σελίδα 12
William Chauvenet. PLANE GEOMETRY . BOOK I RECTILINEAR FIGURES . ANGLES . 1. Definition . A plane angle , or simply an angle , is the amount of divergence of two lines which meet ... angles are equal when one can 12 BOOK I RECTILINEAR ...
William Chauvenet. PLANE GEOMETRY . BOOK I RECTILINEAR FIGURES . ANGLES . 1. Definition . A plane angle , or simply an angle , is the amount of divergence of two lines which meet ... angles are equal when one can 12 BOOK I RECTILINEAR ...
Σελίδα 13
William Chauvenet. 2. Definitions . Two angles are equal when one can be superposed upon the other , so that the vertices shall co- incide and the sides of the first shall fall along the sides of the second . Two angles are added by ...
William Chauvenet. 2. Definitions . Two angles are equal when one can be superposed upon the other , so that the vertices shall co- incide and the sides of the first shall fall along the sides of the second . Two angles are added by ...
Σελίδα 14
... angles of the triangle are the angles formed by the sides with each other ; viz . , CAB , ABC , BCA . The three ... equal ; isosceles ( DEF ) when two of its sides are equal ; equilateral ( GHI ) when its three sides are equal . Ꭰ M ...
... angles of the triangle are the angles formed by the sides with each other ; viz . , CAB , ABC , BCA . The three ... equal ; isosceles ( DEF ) when two of its sides are equal ; equilateral ( GHI ) when its three sides are equal . Ꭰ M ...
Σελίδα 16
... angle which it makes with OB , and will eventually become greater than the angle made with OB . B с Since the angle DOA increases continu- ously ( 3 ) , the line OD must pass through one position in which the angles DOA and DOB are equal ...
... angle which it makes with OB , and will eventually become greater than the angle made with OB . B с Since the angle DOA increases continu- ously ( 3 ) , the line OD must pass through one position in which the angles DOA and DOB are equal ...
Σελίδα 17
... BOD . The first of these three is a right angle , and the other two are together equal to the right angle BOC ; hence the sum of the angles AOD and BOD is equal to two right angles . 14. COROLLARY I. The sum of all angles having a b 2 * ...
... BOD . The first of these three is a right angle , and the other two are together equal to the right angle BOC ; hence the sum of the angles AOD and BOD is equal to two right angles . 14. COROLLARY I. The sum of all angles having a b 2 * ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD adjacent angles altitude angle BAC angles are equal apothem bisects centre chord coincide common cone construct convex Corollary cylinder Definition diagonal diameter dicular diedral angle distance divided draw equal circles equally distant equilateral equivalent Exercise find the locus frustum given circle given line given point given straight line greater Hence hypotenuse included angle inscribed angle intercepted arcs isosceles triangle lateral area lateral edges mean proportional middle point number of sides parallel lines parallelogram parallelopiped pass a plane pendicular perimeter perpen perpendicular plane MN plane passed polyedral angle Proposition VI Proposition VII quadrilateral radii radius ratio rectangle regular inscribed regular polygon respectively equal right angles right triangle Scholium secant secant line segment similar slant height sphere spherical polygon spherical triangle square surface tangent tetraedron Theorem triangle ABC triangles are equal triangular prism triedral upper base vertex volume
Δημοφιλή αποσπάσματα
Σελίδα 127 - The area of a rectangle is equal to the product of its base and altitude.
Σελίδα 196 - If a straight line is perpendicular to each of two straight lines at their point of intersection, it is perpendicular to the plane of those lines.
Σελίδα 131 - Two triangles having an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles.
Σελίδα 245 - A truncated triangular prism is equivalent to the sum of three pyramids whose common base is the base of the prism, and whose vertices are the three vertices of the inclined section.
Σελίδα 278 - A lune is to the, surface of the sphere as the angle of the lune is to four right angles. Let...
Σελίδα 111 - The square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the lengths of the other two sides.
Σελίδα 48 - The three perpendiculars from the vertices of a triangle to the opposite sides meet in the same point.
Σελίδα 57 - A tangent to a circle is perpendicular to the radius drawn to the point of contact.
Σελίδα 34 - The sum of the three angles of any triangle is equal to two right angles.