set square

: to cause to sit : place in or on a seat

: to put (a fowl) on eggs to hatch them

: to put (eggs) for hatching under a fowl or into an incubator

: the act or action of setting

: the condition of being set

: a number of things of the same kind that belong or are used together

: intent, determined

: intentional, premeditated

: fixed by authority or appointment : prescribed, specified

: an instrument having at least one right angle and two straight edges used especially to lay out or test right angles

: a rectangle with all four sides equal

: any of the quadrilateral spaces marked out on a board for playing games

: having four equal sides and four right angles

: forming a right angle

: having a square base

: to make square or rectangular

: to test for deviation from a right angle, straight line, or plane surface

: to bring approximately to a right angle

: in a straightforward or honest manner

: so as to face or be face-to-face

: at right angles