30 degree angle
staircase is made in an angle of 20 to 30 degree and it shouldn't be more then 30 degree.
yes
asuming you know how to construct a 60 degree angle, you would start by drawling a basic construction line an then make your angle bisecter with breaks the angle into 30 degree angles. then create another angle bisector for 30 degrees breaking it into 15 degree angles. then do the same with the 15 degree angle. your drawling sould have three angle bisectors for each angle. to get your answer of 22.5 degress angle, simply add the 15 degree angle you drew with the 7.5 angle you got from spliting the 15 degree angle in half its hard to explain without drawing it out..... hope this helps
150 degrees
If you bisect a 30 degree angle, you end up with two 15 degree angles.
An acute angle.
30 degree angle
Yes.
a 60 degree angle is twice the size of a 30 degree angle.
The beam of light would be reflected at a 30 degree angle from the normal to the mirror. This means the angle of reflection would also be 30 degrees.
The takeoff for a 30 degree angle will depend with the offset angle.
30 degrees
A right angle
Yes and they are both acute angles
a 60-degree angle
The complement to a 60 degree angle would be 30. The ratio then would be 2.