It could be, but not necessarily. If one ray is parallel to the ground, the other ray could be going straight up, or it could be parallel to the ground also, just going in a different direction. Think of an L. The angle in that L is 90 degrees. You could rotate that L in any direction so that it sticks straight up, or you could rotate it so that it is flat to the ground, or so that it is pointing down. It is still 90 degrees.
There is a right angle (90 degrees) and a straight angle (180 degrees).
There are no degrees in a straight line.The angle between two line segments that looks like a single straight line if you didn't knowwhere the vertex of the angle is, measures 180 degrees, and is called a "straight angle".
No. Complementary angles add up to 90 degrees. Supplementary angles add up to 180 degrees.
Square 90.______90. |. | |. | 90.______ 90.
OBTUSE / Less 90 degrees ; ACUTE 90 degrees ; RIGHT ANGLE Obtuse greater than 90 degrees but less than 180 degrees 180 degrees arc swept by a point on a straight line REFLEX ; greater than 180 degrees but less than 360 degrees. ( The 'outside' of an acute or obtuse angle)/
180 Degrees ;]
Because 90 degrees is half of a straight line. A straight line is equal to 180 degrees. 180 divided by 2 = 90.
90 Degrees
a flat line.90 degrees is a straight corner, L180 degrees is a straight line, l270 degrees is a straight corner but opposite of 90 degrees, L360 degrees is a straight line that have turned all the way round, l
An acute angle. Acute is less than 90 degrees Right is 90 degrees Obtuse is greater than 90 degrees Straight is 180 degrees
No. The range of the projectile thrown at 90 degrees is 0. It goes straight up and then straight down!
Because then it would not be a right angle. A right angle is 90 degrees. It is straight up and to the right.
It has to be 90 degrees and yes, straight.
On the unit circle sin(90) degrees is at Y = 1 and as that is on the Y axis X will equal = 0. Ask yourself. Where would 90 degrees be on a 360 degree circle? Straight up.
90 degrees
A straight angle is 180 degrees so half of that is 90 degrees of a right angle.
Acute ; < 90 degrees Right Angles ; 90 degrees Obtuse ; >90 degrees but < 180 degrees. Straight line ; 180 degrees . An arc swept around a point on a straight line Reflex ; The 'outside' angle to an acute or obtuse angle.