Plane and Solid GeometryAmerican Book Company, 1899 - 384 σελίδες |
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Αποτελέσματα 1 - 5 από τα 100.
Σελίδα 12
... draw two straight lines in different directions . Draw two straight lines from each of several other points , and thus form several angles . 2. How does the angle at the corner of this page compare in size with the angle at the corner ...
... draw two straight lines in different directions . Draw two straight lines from each of several other points , and thus form several angles . 2. How does the angle at the corner of this page compare in size with the angle at the corner ...
Σελίδα 16
... Draw two straight lines intersecting in as many points as possible . In how many points do they intersect ? Inference : Two straight lines cannot intersect in more than one point . 2. Draw a straight line ; draw another meeting it . How ...
... Draw two straight lines intersecting in as many points as possible . In how many points do they intersect ? Inference : Two straight lines cannot intersect in more than one point . 2. Draw a straight line ; draw another meeting it . How ...
Σελίδα 17
... Draw a straight line ; select any point in that line and draw as many perpendiculars as possible to the line at that point . How many such perpendiculars can be drawn on one side of the line ? DEMONSTRATION OR PROOF 38. The inferences ...
... Draw a straight line ; select any point in that line and draw as many perpendiculars as possible to the line at that point . How many such perpendiculars can be drawn on one side of the line ? DEMONSTRATION OR PROOF 38. The inferences ...
Σελίδα 21
... Draw a straight line and as many perpendiculars as possible to the line at one point . How many can be drawn ? ( § 37. ) Theorem . At any point in a straight line one perpen- dicular to the line can be drawn , and only one . Data : Any ...
... Draw a straight line and as many perpendiculars as possible to the line at one point . How many can be drawn ? ( § 37. ) Theorem . At any point in a straight line one perpen- dicular to the line can be drawn , and only one . Data : Any ...
Σελίδα 23
... Draw a straight line , and from any point in it draw several lines extending in different directions . How does the sum of the consecutive angles formed on one side of the line compare with a right angle ? With a straight angle ? How ...
... Draw a straight line , and from any point in it draw several lines extending in different directions . How does the sum of the consecutive angles formed on one side of the line compare with a right angle ? With a straight angle ? How ...
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.