Rotating 90o counterclockwise or 279o
clockwise about the origin will:
a) change the sign of x and switch x, y
b) change the sign of x only
c) change the sign of y only
d) change the sign of y and switch x, y
An acute angle is an angle
which is greater than 0o and less than…………..
a) 40o
b)60o
c)90o
d)180o
An angle which is greater than 90o and less than 180o is called ……………….
a) Acute angle
b) Right angle
c) Reflex angle
d) Obtuse angle
Reflex angle is greater than………and less than ………….
a) 180o, 360o
b) 90o, 180o
c) 180o, 270o
d) 45o, 90o
If two angles of a triangle are of measure 60o each. Then the measure of the third angle will be…..
a) 30o
b) 60o
c)90o
d) 120o
