The Elements of Euclid [book 1] for beginners, by J. Lowres1852 |
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Αποτελέσματα 1 - 5 από τα 15.
Σελίδα 8
... equal to one another , each of them is called a right angle ; and the right line which stands upon the other is called a perpendicular to it ; thus , if the line AB , standing upon CD , makes the angles ABC and ABD equal , each of them ...
... equal to one another , each of them is called a right angle ; and the right line which stands upon the other is called a perpendicular to it ; thus , if the line AB , standing upon CD , makes the angles ABC and ABD equal , each of them ...
Σελίδα 9
... CD . 31. A square is a quadrilateral figure , having all its sides equal and all its angles right angles ; as , H. 32. An oblong or rectangle is a qua- drilateral figure , having all its angles right angles , but its length exceeds its ...
... CD . 31. A square is a quadrilateral figure , having all its sides equal and all its angles right angles ; as , H. 32. An oblong or rectangle is a qua- drilateral figure , having all its angles right angles , but its length exceeds its ...
Σελίδα 12
... equal to a given right line . Let A be the given point , and BC the given line ; it is required to draw from △ a ... CD the less ; it is required to cut off from AB , a part equal to CD . C G A From the point A draw a line AG equal to ...
... equal to a given right line . Let A be the given point , and BC the given line ; it is required to draw from △ a ... CD the less ; it is required to cut off from AB , a part equal to CD . C G A From the point A draw a line AG equal to ...
Σελίδα 15
... equal ; then the sides BC and BD are not equal . CASE 1. When the vertex of each tri- angle is without the other . A B Join CD , and if it be possible , let Bc be equal to BD then in the triangle CAD , because the sides AC and AD are equal ...
... equal ; then the sides BC and BD are not equal . CASE 1. When the vertex of each tri- angle is without the other . A B Join CD , and if it be possible , let Bc be equal to BD then in the triangle CAD , because the sides AC and AD are equal ...
Σελίδα 17
... CD ( Prop . 9. ) ; then AB is bisected in the point D. A D B For in the triangles ACD and BCD , the side a c is equal to BC ( Const . ) , the side CD is common to both , and the angle A CD is equal to BCD ( Const . ) ; therefore the base AD ...
... CD ( Prop . 9. ) ; then AB is bisected in the point D. A D B For in the triangles ACD and BCD , the side a c is equal to BC ( Const . ) , the side CD is common to both , and the angle A CD is equal to BCD ( Const . ) ; therefore the base AD ...
Άλλες εκδόσεις - Προβολή όλων
The Elements of Euclid [Book 1] for Beginners, by J. Lowres Joseph Butler,Thomas Codrington,Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
The Elements of Euclid [book 1] for Beginners, by J. Lowres Joseph Butler,Thomas Codrington,Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
The Elements of Euclid [book 1] for Beginners, by J. Lowres Joseph Butler,Thomas Codrington,Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
A B and C D A B is equal ABC and ABD ABCD adjacent angles alternate angles angle ABC angle BAC angle equal angle opposite angles AGF angles CAB angles DBA base BC BC is equal BD Prop BGF and EHD bisect coincide DBC are equal demonstrated describe an equilateral diagonal draw EHD are equal equal Ax equal bases equal Hyp equal Prop equal sides equal to CD equal triangles equilateral triangle EUCLID's ELEMENTS exterior given angle given line given point greater than AC hypotenuse interior angles interior opposite angle isosceles triangle join Let the line line BC lines A B parallel Prop parallel to BC parallelogram perpendicular price One Shilling PROB produced proposition rectilineal figure respectively equal right angles Prop SCHOL side A B sides AB sides BC THEOR triangle ABC triangles are equal Twickenham vertex W. W. D. PROP
Δημοφιλή αποσπάσματα
Σελίδα 10 - Things which are halves of the same are equal to one another. 8. Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another.
Σελίδα 10 - Things which are equal to the same thing are also equal to one another. 2. If equals be added to equals, the wholes are equal. 3. If equals be subtracted from equals, the remainders are equal. 4. Things which coincide with one another are equal to one another.
Σελίδα 40 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Σελίδα 10 - If a straight line meets two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
Σελίδα 10 - LET it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 39 - If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sides of it ; the angle contained by these two sides is a right angle.
Σελίδα 20 - If one side of a triangle be produced, the exterior angle is greater than either of the interior opposite angles.
Σελίδα 29 - 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 22 - Any two sides of a triangle are together greater than the third side.
Σελίδα 10 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals, the wholes are equal. 3. If equals be taken from equals, the remainders are equal. 4. If equals be added to unequals, the wholes are unequal.