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