Both Uses of
right angle
in
The Autobiography of Benjamin Franklin
- He preach'd one evening from the top of the Court-house steps, which are in the middle of Market-street, and on the west side of Second-street, which crosses it at right angles.†
*
- Our city, tho' laid out with a beautiful regularity, the streets large, strait, and crossing each other at right angles, had the disgrace of suffering those streets to remain long unpav'd, and in wet weather the wheels of heavy carriages plough'd them into a quagmire, so that it was difficult to cross them; and in dry weather the dust was offensive.†
Definition:
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(right angle) an angle measuring 90 degrees (like the angle between a classroom floor and wall)