 | Arthur A. Dodd, B. Thomas Chace - Geometry - 1898 - 468 pages
...AB a straight line. Required: To bisect A B. Construction: [Let the pupil construct the figure.] (1) With centers A and B and any radius greater than one-half of AB, describe arcs which intersect at C and D. (2) Draw CD, cutting AB at E. Then AB is bisected at E. Proof: (1) AC=BC,... | |
 | Gardner Chace Anthony - Mechanical drawing - 1922 - 192 pages
...number be obtained. 91. To Bisect a Right Line, AB, the Arc of a Circle, or an Angle ACB. — Fig. 154. With centers A and B, and any radius greater than...draw a line. Its intersection with the given line AB, or the arc of the circle ACB, will determine the required points. 92. To Draw a Perpendicular to a... | |
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With centers A and B, and any radius greater than one-half of AB, describe arcs 1 and 2. Through the points of intersection of these arcs draw a line. Its intersection with the given line AB, or the arc of the circle ACB, will determine the required points. 