Euclid for beginners, books i. and ii., with simple exercises by F.B. HarveyLongmans, Green, and Company, 1880 - 119 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 16.
Σελίδα 24
... exterior angle is greater than either of the interior opposite angles . Let ABC be a triangle , and let the side BC be produced to D. Then it is to be proved that The exterior angle ACD shall be greater than either the interior opposite ...
... exterior angle is greater than either of the interior opposite angles . Let ABC be a triangle , and let the side BC be produced to D. Then it is to be proved that The exterior angle ACD shall be greater than either the interior opposite ...
Σελίδα 25
Euclides, Frederick Burn Harvey. But the angle BCG the angle ACD ( I. 15 ) , therefore the exterior angle ACD is greater than the interior opposite angle ABC . Therefore , it is proved , as required , that The exterior angle ACD is ...
Euclides, Frederick Burn Harvey. But the angle BCG the angle ACD ( I. 15 ) , therefore the exterior angle ACD is greater than the interior opposite angle ABC . Therefore , it is proved , as required , that The exterior angle ACD is ...
Σελίδα 26
... angles ACB and BAC are together less than two right angles . B C D CONSTRUCTION . - Produce the side BC to D. PROOF . Because the exterior angle ACD is greater than the interior and opposite angle ABC ( I. 16 ) , add to each of these the ...
... angles ACB and BAC are together less than two right angles . B C D CONSTRUCTION . - Produce the side BC to D. PROOF . Because the exterior angle ACD is greater than the interior and opposite angle ABC ( I. 16 ) , add to each of these the ...
Σελίδα 27
... exterior angle ADB is greater than the interior and opposite angle BCD ( I. 16 ) , ¿ .e . the angle BCA ( note 2 def . 15 ) ; and the angle ABD = the angle ADB ( I. 5 ) ; therefore the angle ABD is also greater than the angle BCA . Again , ...
... exterior angle ADB is greater than the interior and opposite angle BCD ( I. 16 ) , ¿ .e . the angle BCA ( note 2 def . 15 ) ; and the angle ABD = the angle ADB ( I. 5 ) ; therefore the angle ABD is also greater than the angle BCA . Again , ...
Σελίδα 31
... exterior angle BDC of the triangle DCE is greater than the interior and opposite angle CED ( I. 16 ) , i.e. the angle CEB ( note 2 def . 15 ) , and also the exterior angle CEB is greater than the interior and opposite angle BAE ( I. 16 ) ...
... exterior angle BDC of the triangle DCE is greater than the interior and opposite angle CED ( I. 16 ) , i.e. the angle CEB ( note 2 def . 15 ) , and also the exterior angle CEB is greater than the interior and opposite angle BAE ( I. 16 ) ...
Άλλες εκδόσεις - Προβολή όλων
Euclid for Beginners, Books I. and II., with Simple Exercises by F.B. Harvey Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABC and ABD AC and CD adjacent angles alternate angle angle ABC angle ACB angle AGH angle BAC angle CEB angle DEF angle EDF angle GHD Arithmetic BA and AC base BC Beginners bisected CONSTRUCTION.-1 crown 8vo Dictionary double the square draw Edition English Grammar English History equilateral Euclid exterior angle Gallic War Geography given straight line gnomon greater Greek half a right i.e. the angle interior and opposite join Latin Let ABC line be divided LONGMANS Manual note 2 def opposite angle parallel parallelogram post 8vo produced PROOF.-Because Proposition proved Q. E. D. Exercise Q. E. D. PROP rectangle contained rectilineal figure right angles School side AB side AC small 8vo square on AC Stepping-Stone straight line CD THEOREM triangle ABC twice the rect twice the rectangle vols Wherefore
Δημοφιλή αποσπάσματα
Σελίδα 48 - IF a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
Σελίδα 88 - If a straight line be divided into two equal parts, and also into two unequal parts ; the rectangle contained by the unequal parts, together with the square on the line between the points of section, is equal to the square on half the line.
Σελίδα 14 - To draw a straight line at right angles to a given straight line, from a given point in the same.
Σελίδα 36 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.
Σελίδα 64 - 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 108 - In every triangle, the square on the side subtending an acute angle, is less than the squares on the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the perpendicular let fall on it from the opposite angle, and the acute angle. Let ABC be any triangle, and the angle at B an acute angle; and on BC one of the sides containing it, let fall the perpendicular...
Σελίδα 47 - 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 104 - To divide a given straight line into two parts, so that the rectangle contained by the whole, and one of the parts, may be equal to the square of the other part.
Σελίδα 52 - The straight lines which join the extremities of two equal and parallel straight lines, towards the same parts, are also themselves equal and parallel.
Σελίδα 20 - If, at a point in a straight line, two other straight lines upon the opposite sides of it, make the adjacent angles, together equal to two right angles, these two straight lines shall be in one and the same straight line.