ANSWERS: 4
-
An angle that is 90 degrees.
-
it is 90 degrees like the corner of a paper
-
http://static.newworldencyclopedia.org/thumb/6/6c/Right_angle.svg/600px-Right_angle.svg.png
-
A tri-angle with a 90 deg angle
Copyright 2023, Wired Ivy, LLC

by 