Plane and Solid GeometryAmerican Book Company, 1899 - 384 σελίδες |
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Αποτελέσματα 1 - 5 από τα 83.
Σελίδα 12
... sides ? 3. Form several angles at the same point ; that is , several angles having a common vertex . 4. How many of them have a common vertex and one common side between them and are , at the same time , on opposite sides of the common side ...
... sides ? 3. Form several angles at the same point ; that is , several angles having a common vertex . 4. How many of them have a common vertex and one common side between them and are , at the same time , on opposite sides of the common side ...
Σελίδα 13
... angles formed by the lines meeting at O may be designated by AOC , the figure 1 , and the small letter a . B 25. Angles which have a common vertex and a common side , and which are upon opposite sides of the common side , are called ...
... angles formed by the lines meeting at O may be designated by AOC , the figure 1 , and the small letter a . B 25. Angles which have a common vertex and a common side , and which are upon opposite sides of the common side , are called ...
Σελίδα 17
... opposite or vertical angles compare in size ? 6. Draw two lines intersecting so as to form a right angle . How does each of the other angles formed compare with a right angle ? How do right angles compare in size ? How do straight angles ...
... opposite or vertical angles compare in size ? 6. Draw two lines intersecting so as to form a right angle . How does each of the other angles formed compare with a right angle ? How do right angles compare in size ? How do straight angles ...
Σελίδα 24
... angles which have a common vertex in a line , and which lie on one side of it , is ... sides form ? Theorem . If the sum of two adjacent angles is equal to two ... opposite directions from the point o , form one straight line . Therefore ...
... angles which have a common vertex in a line , and which lie on one side of it , is ... sides form ? Theorem . If the sum of two adjacent angles is equal to two ... opposite directions from the point o , form one straight line . Therefore ...
Σελίδα 25
... opposite or vertical angles compare in size ? Theorem . If two straight lines intersect , the vertical angles are ... sides of this equality , by Ax . 3 , r Lv = Lt . In like manner it may be proved that ≤ r = ≤ s . Therefore , etc. Ex ...
... opposite or vertical angles compare in size ? Theorem . If two straight lines intersect , the vertical angles are ... sides of this equality , by Ax . 3 , r Lv = Lt . In like manner it may be proved that ≤ r = ≤ s . Therefore , etc. Ex ...
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 cylinder Data diagonals diameter dihedral angles distance divided equal circles equidistant equilateral triangle equivalent exterior angle extremities FGHJK Find the locus frustum given line given point given straight line Hence homologous sides hypotenuse inscribed angle intersecting isosceles trapezoid isosceles triangle measured by arc middle point number of sides opposite sides parallel lines parallelogram parallelopiped pass perimeter perpendicular plane polyhedron prism produced Proof prove pyramid Q.E.D. Proposition quadrilateral radii radius ratio rect rectangle formed regular polygon respectively rhombus right angle right triangle secant segments sphere spherical triangle subtended surface tangent Theorem transversal trapezoid triangle ABC triangles are equal trihedral vertex vertical angle volume
Δημοφιλή αποσπάσματα
Σελίδα 67 - 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 47 - After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles...
Σελίδα 64 - 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 33 - 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 219 - 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 217 - The. sum of the angles of any polygon is equal to twice as many right angles as the polygon has sides, less four right angles.
Σελίδα 136 - The first and fourth terms of a proportion are called the extremes, and the second and third terms, the means. Thus, in the foregoing proportion, 8 and 3 are the extremes and 4 and 6 are the means.
Σελίδα 90 - 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.
Σελίδα 374 - If in a right triangle a perpendicular is drawn from the vertex of the right angle to the hypotenuse : I.
Σελίδα 176 - The area of a rectangle is equal to the product of its base and altitude. Given R a rectangle with base b and altitude a. To prove R = a X b. Proof. Let U be the unit of surface. .R axb U' Then 1x1 But - is the area of R.