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BOOK I. PROP. XXIV. THEOR.
F two triangles have two sides of the one respectively equal to two sides of the other (
to
and
to
), and if one of the angles (
) contained by the equal sides be greater than the other (
), the side (
) which is opposite to the greater angle is greater than the side (
) which is opposite to the less angle.
Because =
(ax. I. hyp. const.)
Q. E. D.