In geometry and trigonometry, a right angle is an angle that bisects the angle
formed by two adjacent parts of a straight line. More precisely, if a ray is placed
Right Angles. A right angle is an internal angle which is equal to 90°. This is a
right angle. Note the special symbol like a box in the angle. If we see this, it is a ...
Right angles are one of the most common and interesting angles in all of
geometry. It even has its own angle symbol. In the figure above, set the angle to
A triangle containing a right angle is called a right triangle. However, a triangle
cannot contain more than one right angle, since the sum of the two right angles ...
Sal discusses acute, obtuse, and right angles and shows examples of each.
An angle formed by the perpendicular intersection of two straight lines; an angle
of 90°. American Heritage® Dictionary of the English Language, Fifth Edition.
In this lesson, you will learn about the properties that identify right angles. You
will also discover where right angles can be found and learn...
These are not right angles: Image:RightAngleNot.png The two at the left are both
obtuse ("wider" than a right angle) and the two at the right are both acute ...
Jul 5, 2013 ... A right angle is an angle with a measurement of 90 degrees. When two lines
cross each other so that all the angles have the same size, the ...
Right angle definition, the angle formed by two radii of a circle that are drawn to
the extremities of an arc equal to one quarter of the circle; the angle formed by ...