A 90 degree angle is also known as right angle. A right angle (or 90 degrees) looks like an L shape. A square or rectangle's four corners are all 90 degrees.
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For a 450 degree angle, you would subtract 360 from 450, which gives you 90 degrees. Therefore, you will draw a 90 degree angle. Explanation below: There are only 360 degrees in a circle. A 450 degree angle would go around a circle once completely, then it would stop at the 90 degree angle mark.
Oh honey, that's an easy one. Another name for a right angle DEF is a 90-degree angle. It's like the perfect L shape, straight up and down, no funny business. So, go ahead and call it a 90-degree angle or a right angle, whatever floats your boat.
The kind of angle found in a yield sign is a 90-degree angle, specifically a right angle. A right angle is formed when two lines intersect and create four equal quarters, each measuring 90 degrees. In the case of a yield sign, the white triangle with a red border creates two right angles at the corners where the triangle meets the border.
A right angle is an angle whose measure is exactly 90 degrees. Continuing around the circle, next is the obtuse angle. An obtuse angle is an angle whose measure is in between 90 and 180 degrees. The last major kind of angle is the straight angle. A straight angle is an angle that measures exactly 180 degrees. Thus the name - the two rays form a straight line. A negative angle is also possible. This just means that you go clockwise instead of counterclockwise.SOURCE: http://library.thinkquest.org/2647/geometry/angle/measure.htmthat website also has lots of more information on angles!
A right angle triangle and the third angle measures 60 degrees