Mathematics: Mechanic's bids and estimates. Mensuration for beginners. Easy lessons in geometrical drawing. Elementary algebra. A first course in geometry. .... I.. II.. III.. IV.. V.Seymour Eaton Doubleday & McClure Company, 1899 - 340 σελίδες |
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Σελίδα 126
... the parallelogram equally . ( 4 ) That the diagonals bisect each other . It is shown also that the perpendiculars drawn from one pair of opposite angles to the diagonal joining the other pair are equal . Thus , if ABCD is a 126 MATHEMATICS.
... the parallelogram equally . ( 4 ) That the diagonals bisect each other . It is shown also that the perpendiculars drawn from one pair of opposite angles to the diagonal joining the other pair are equal . Thus , if ABCD is a 126 MATHEMATICS.
Σελίδα 168
... bisect a given straight line . Given line AB . With A and B as centers , and with any convenient radius greater than one - half of AB , describe arcs intersecting on both sides of AB at C and D. Join the points C and D , and the ...
... bisect a given straight line . Given line AB . With A and B as centers , and with any convenient radius greater than one - half of AB , describe arcs intersecting on both sides of AB at C and D. Join the points C and D , and the ...
Σελίδα 171
... bisect- ing the angle B. BD bisects the chord AC and also the arc . The arc measures the angle , therefore the angle is bisected . 6. To trisect a right angle . Given the right angle A. From A describe any con- venient arc BC . Then ...
... bisect- ing the angle B. BD bisects the chord AC and also the arc . The arc measures the angle , therefore the angle is bisected . 6. To trisect a right angle . Given the right angle A. From A describe any con- venient arc BC . Then ...
Σελίδα 174
... Bisect AB in E , and with center E and radius EB draw a semicircle . At C draw CD perpendicular to AB . Then CD will be the mean proportional required . Lesson No. 4 A triangle is a plane figure bounded by three straight lines . When ...
... Bisect AB in E , and with center E and radius EB draw a semicircle . At C draw CD perpendicular to AB . Then CD will be the mean proportional required . Lesson No. 4 A triangle is a plane figure bounded by three straight lines . When ...
Σελίδα 175
... Bisect the base AB with the perpendicular EH ( see Problems 1 E H A D and 2 ) , and make EH equal to CD . Join EA and EB . Then EAB is the required triangle . 12. To construct a right - angled triangle having given the hypotenuse and ...
... Bisect the base AB with the perpendicular EH ( see Problems 1 E H A D and 2 ) , and make EH equal to CD . Join EA and EB . Then EAB is the required triangle . 12. To construct a right - angled triangle having given the hypotenuse and ...
Συχνά εμφανιζόμενοι όροι και φράσεις
9 ft ABCD acres adjacent angles algebra angle ABC angle ACB angle BAC angle EDF angle equal Answer axle base BC Bisect breadth bricks circle circumference Construction cube cubic foot cylinder describe arcs diagonal diagram diameter Divide draw equal in area equilateral triangle expression exterior angle fence figure Find the area Find the cost Find the number Find the value floor given line given straight line greater highest common factor hypotenuse inches isosceles triangle Join Lesson Let ABC lever measure multiply number of cubic number of square opposite angle parallel parallelogram perpendicular plane Proof Proposition 31 Prove pulley QUESTIONS AND EXERCISES radius rectangle rectangular right angles right-angled triangle rule of signs shown sides solid square root square yard surface THEOREM thick triangle ABC wall weight wide
Δημοφιλή αποσπάσματα
Σελίδα 307 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Σελίδα 319 - Triangles upon the same base, and between the same parallels, are equal to one another.
Σελίδα 300 - Any two sides of a triangle are together greater than the third side.
Σελίδα 326 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Σελίδα 312 - If a straight line fall on two parallel straight lines, it makes the alternate angles equal to one another,and the exterior angle equal to the interior and opposite angle on the same side ; and also the two interior angles on the same side together equal to two right angles.
Σελίδα 332 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.
Σελίδα 283 - If two angles of a triangle be equal to one another, the sides also which subtend, or are opposite to, the equal angles, shall be equal to one another.
Σελίδα 314 - To draw a straight line through a given point parallel to a given straight line. Let A be the given point, and BC the given straight line.
Σελίδα 279 - THE angles at the base of an isosceles triangle are equal to one another : and, if the equal sides be produced, the angles upon the other side of the base shall be equal.
Σελίδα 268 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.