Plane and Solid GeometryAmerican Book Company, 1899 - 384 σελίδες |
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Αποτελέσματα 1 - 5 από τα 41.
Σελίδα 12
... angle at the corner of this page compare in size with the angle at the corner of the room ? Show your answer to be ... vertical angles . 23. The difference in direction of two lines which meet is called a Plane Angle , or simply an Angle ...
... angle at the corner of this page compare in size with the angle at the corner of the room ? Show your answer to be ... vertical angles . 23. The difference in direction of two lines which meet is called a Plane Angle , or simply an Angle ...
Σελίδα 14
William James Milne. 28. An angle less than a right angle is called an Acute Angle . 29. An angle greater than a ... Vertical Angles . The angles AOC and DOB , and the angles AOD and COB are vertical angles . 34. A line drawn so as to ...
William James Milne. 28. An angle less than a right angle is called an Acute Angle . 29. An angle greater than a ... Vertical Angles . The angles AOC and DOB , and the angles AOD and COB are vertical angles . 34. A line drawn so as to ...
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 25
... vertical angles compare in size ? Theorem . If two straight lines intersect , the vertical angles are equal . Data ... angle is 43 ° . the angle ? Ex . 11. The supplement of an angle is 125 ° . the angle ? Q.E.D. What is the supplement ...
... vertical angles compare in size ? Theorem . If two straight lines intersect , the vertical angles are equal . Data ... angle is 43 ° . the angle ? Ex . 11. The supplement of an angle is 125 ° . the angle ? Q.E.D. What is the supplement ...
Σελίδα 29
... angle of 90 ° with AB . What is the direction of this line with refer- ence to each of the other two lines ? Ex . 19. State and illustrate the differences between a plumb line , a per- pendicular line , and a vertical line . Ex . 20 ...
... angle of 90 ° with AB . What is the direction of this line with refer- ence to each of the other two lines ? Ex . 19. State and illustrate the differences between a plumb line , a per- pendicular line , and a vertical line . Ex . 20 ...
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.