T H E E L E M E N T S |
Book I Proposition 37 | |
Then each of the figures EBCA, DBCF is a parallelogram; and they are equal, for they are one the same base BC and in the same parallels BC, EF. [I.35] Moreover the triangle ABC is half of the parallelogram EBCA; for the diameterAB bisects it. [I.34] And the triangle DBC is half of the parallelogram DBCF; for the diameter DC bisects it. |
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