# threes

Noun

- The parts of the flower are most frequently arranged in fives, or multiples of fives; for instance, a common arrangement is as follows, - five sepals, succeeded by five petals, ten stamens in two sets of five, and five or fewer carpels; an arrangement in fours is less frequent, while the arrangement in
**threes**, so common in monocotyledons, is rare in dicotyledons. - The whole theory of the inflections of a cubic curve is discussed in a very interesting manner by means of the canonical form of the equation x +y +z +6lxyz= o; and in particular a proof is given of Plucker's theorem that the nine points of inflection of a cubic curve lie by
**threes**in twelve lines. - It has 12 faces, which meet in 30 edges; these intersect in
**threes**to form 20 vertices. - Later I said, "Make fifteen
**threes**and count." - I wished her to make the groups of
**threes**and supposed she would then have to count them in order to know what number fifteen**threes**would make.

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