This is for my geometry/trig stuff
2007-01-21 14:15:38 · 17 answers · asked by porscheleenj 2 in Science & Mathematics ➔ Mathematics
A negative not positive angle.
Jeez
2007-01-22 14:18:14 · update #1
-90 degrees is the anti-clock wise direction of 90 degrees so -90 degrees is 90 degrees
2007-01-21 20:17:28 · answer #1 · answered by james 2 · 1⤊ 0⤋
A 90 degree angle is called a right angle
2007-01-21 22:23:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋
A 90 degree angle is called a right angle.
2007-01-21 22:19:40 · answer #3 · answered by nency k 2 · 0⤊ 0⤋
its 270 degrees.
think of it as a circle with an x-y axis through it. now, think of the lines as markers for degrees counterclockwise; the one pointing to the right is 0 degrees; straight up, 90; to the left, 180; down, 270; and to the right again is 360 (and 0). when you take angles, you assume that they start from the 0 mark. therefore, if its -90 degrees, then you take 90 degrees and go clockwise (its going backwards because its negative). This is -90, also known as 270.
2007-01-21 22:36:47 · answer #4 · answered by snoopeyy 2 · 1⤊ 0⤋
Right-angled triangle [Geom.] A plane form having 3 straight sides meeting in 3 angles, one of which is 90 degree. Right angle=angle of 90 degrees.
2007-01-21 22:34:45 · answer #5 · answered by gangadharan nair 7 · 0⤊ 0⤋
If one leg of a 90 degree angle lies on the floor and the other leg is perpendicular with the floor (straight up!) the second leg will be "upright" (like an upright piano?) and the angle is called a "right" angle.
2007-01-21 23:12:09 · answer #6 · answered by Kes 7 · 0⤊ 0⤋
Right Angle.
2007-01-21 22:21:06 · answer #7 · answered by krissh 3 · 0⤊ 0⤋
it is called a right angle! 180 degree is a straight
2007-01-21 22:20:10 · answer #8 · answered by Jay 1 · 0⤊ 0⤋
Anti-clockwise rotation is counted as positive angle
Clockwise rotation is counted as negative angle
- 90 deg >> rotate 90 deg clockwise from reference line (normally reference line is positive x-axis)
2007-01-21 22:19:50 · answer #9 · answered by Sheen 4 · 1⤊ 0⤋
A right angle. It is NOT a straight line.
2007-01-21 22:26:33 · answer #10 · answered by Anonymous · 0⤊ 0⤋