Euclid's Elements of GeometryBell & Daldy, 1872 - 261 sider |
Inni boken
Resultat 1-5 av 41
Side 44
... rectangle under these lines ( A and BC , ) shall be equal to the rectangles under the undivided line ( A , ) and the ... rectangle BL is equal to the rectangles BG , DK , and EL , but the rectangle BL , is the rectangle under A and BC ...
... rectangle under these lines ( A and BC , ) shall be equal to the rectangles under the undivided line ( A , ) and the ... rectangle BL is equal to the rectangles BG , DK , and EL , but the rectangle BL , is the rectangle under A and BC ...
Side 45
... rectangle is found , by multiplying the altitude into the base ; and from Prop . 35 and 36 , B. 1 , the area of any ... rectangle AE is the rectangle under AB and AC , because AD is equal to AB , ( by Const . ) : and the rectangle CF ...
... rectangle is found , by multiplying the altitude into the base ; and from Prop . 35 and 36 , B. 1 , the area of any ... rectangle AE is the rectangle under AB and AC , because AD is equal to AB , ( by Const . ) : and the rectangle CF ...
Side 46
... rectangle AE is equal to the square ADFC , together with the rectangle CE . But the rectangle AE is the rectangle under AC and AB , for AD is equal to AC , ( by Const . and Def . 31 , B. 1 , ) and the square ADFC D ป C is the square of ...
... rectangle AE is equal to the square ADFC , together with the rectangle CE . But the rectangle AE is the rectangle under AC and AB , for AD is equal to AC , ( by Const . and Def . 31 , B. 1 , ) and the square ADFC D ป C is the square of ...
Side 47
... rectangle under AB and BO , is equal to the sum of the rectangle under AO and OB , and the square of OB ( by last ref . ) ; therefore , the sum of the rectangles under AB and OA , and under AB and BO , ( or the square of AB , ) is equal ...
... rectangle under AB and BO , is equal to the sum of the rectangle under AO and OB , and the square of OB ( by last ref . ) ; therefore , the sum of the rectangles under AB and OA , and under AB and BO , ( or the square of AB , ) is equal ...
Side 48
... rectangle under AD and DB is equal to the sum of the rectangles under AC and DB , and under CD and DB . ( by Prop . 1. B. 2 ) ; but the rectangle under AC and DB is equal to the rectangle under CB and DB ( because AC and CB are equal ) ...
... rectangle under AD and DB is equal to the sum of the rectangles under AC and DB , and under CD and DB . ( by Prop . 1. B. 2 ) ; but the rectangle under AC and DB is equal to the rectangle under CB and DB ( because AC and CB are equal ) ...
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Vanlige uttrykk og setninger
absurd AC and CB AC by Prop AC is equal angle ABC angles by Prop arch base bisected centre circumference CKMB co-efficient Const contained in CD contained oftener divided divisor double draw drawn equal angles equal by Constr equal by Hypoth equal by Prop equal to twice equation equi equi-multiples equi-submultiples equiangular equilateral external angle fore four magnitudes proportional given angle given circle given line given right line given triangle gonal half a right inscribed less multiplying oftener contained parallel parallelogram perpendicular PROPOSITION quantities rectangle under AC rectilineal figure remaining angles remaining side right angles right line AC Schol segment side AC similar similarly demonstrated squares of AC submultiple subtract THEOREM tiple touches the circle triangle BAC twice the rectangle
Populære avsnitt
Side 18 - If two triangles have two sides of the one equal to two sides of the...
Side 28 - DE : but equal triangles on the same base and on the same side of it, are between the same parallels ; (i.
Side 207 - ... they have an angle of one equal to an angle of the other and the including sides are proportional; (c) their sides are respectively proportional.
Side 216 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Side 127 - In any proportion, the product of the means is equal to the product of the extremes.
Side 161 - Magnitudes are said to be in the same ratio, the first to the second and the third to the fourth, when, if any equimultiples whatever be taken of the first and third, and any equimultiples whatever of the second and fourth, the former equimultiples alike exceed, are alike equal to, or alike fall short of, the latter equimultiples respectively taken in corresponding order.
Side 112 - To reduce fractions of different denominators to equivalent fractions having a common denominator. RULE.! Multiply each numerator into all the denominators except its own for a new numerator, and all the denominators together for a common denominator.
Side 213 - ... are to one another in the duplicate ratio of their homologous sides.
Side 163 - Convertendo ; when it is .concluded, that if there be four magnitudes proportional, the first is to the sum or difference of the first and second, as the third is to the sum or difference of the third and fourth.
Side 88 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.