FOURTH proportional to three given Polygon similar to given polygon and
lines, 282.
equivalent to another given polygon,

420.

HAVING given two angles of triangle, Polygon similar to given polygon,
to find third, 87.
having given ratio of similitude, 301.

Polygon similar to given polygon, hav- Square having given ratio to given

ing given ratio to it, 412.

square, 411.

RECTANGLE equivalent to given square, TANGENT to circle at point on circum-
having difference of base and altitude

given, 418.

ference, 175.
from point without,

Rectangle equivalent to given square,
having sum of base and altitude
given, 416.

221.

Triangleequivalent to given polygon, 410.

side and two angles given, 88.
thrce sides given, 90.
two sides and angle opposite

one given, 94.

two sides and included angle
given, 81.

UPON a given straight line to construct
a segment which shall contain a given
angle, 222.

Area triangle, 390, 450(17), 450(36),

Ex. 99

CIRCUMFERENCE of circle, 493.

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