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let these meet one another at the point D;
from D
let DE, DF, DG be drawn perpendicular to the straight lines AB, BC, CA.
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T H E E L E M E N T S |
Book IV Proposition 4 | |
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Let the angles ABC, ACB be bisected ty the straight lines BD, CD, [I.9] and let these meet one another at the point D; from D let DE, DF, DG be drawn perpendicular to the straight lines AB, BC, CA. |
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