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The Harpur Euclid: An Edition of Euclid's Elements - Primary Source Edition
Edward Mann Langley
Keine Leseprobe verfügbar - 2013
ABCD base bisect bisector Book called centre chord circum-circle circumference coincide common constant construction converse demonstration described diagonals diameter distance divided draw drawn equal equilateral Euclid exercise external falls figure fixed four given circle given point given straight line greater Hence inscribed intersect Join length less lies locus magnitude mean meet method mid-point NOTE opposite sides parallel parallelogram pass perpendicular plane problem produced Prop proportional PROPOSITION prove quadrilateral radius ratio rect rectangle contained rectilineal figure regular respectively right angles segment Show sides similar Similarly square student Take taken tangent Theorem third touch triangle ABC twice vertex vertices whole
Seite 21 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Seite 390 - ... figures are to one another in the duplicate ratio of their homologous sides.
Seite 97 - Let it be granted that a straight line may be drawn from any one point to any other point.
Seite 370 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Seite 96 - 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.
Seite 40 - Any two sides of a triangle are together greater than the third side.
Seite 143 - Three times the sum of the squares on the sides of a triangle is equal to four times the sum of the squares of the lines joining the middle point of each side with the opposite angles.
Seite 407 - Pythagoras' theorem states that the square of the length of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the lengths of the other two sides.