The First Book of Euclid's Elements: Arranged for Beginners

MacMillan, 1892 - 167 من الصفحات

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مقاطع مشهورة

الصفحة 28 - 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.
الصفحة 72 - 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.
الصفحة 48 - From the greater of two given straight lines to cut off a part equal to the less. Let AB and C be the two given straight lines, whereof AB is the greater.
الصفحة 151 - 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 ; it is required to draw a straight line through the point A, parallel to the straight hue BC.
الصفحة 118 - THE straight lines which join the extremities of two equal and parallel straight lines, towards the same parts, are also themselves equal and parallel.
الصفحة 149 - ... is equal to the sum of the areas of the squares on the other two sides.
الصفحة 114 - 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.
الصفحة 135 - DE : but equal triangles on the same base and on the same side of it, are between the same parallels ; (i.
الصفحة 125 - The line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of the third side.
الصفحة 54 - To draw a straight line at right angles to a given straight line, from a given point in the same.