use a protractor and a ruler
To construct an angle of 142.5 degrees, you can start by drawing a straight line using a ruler. Then, using a protractor, mark a point on the line to serve as the vertex of the angle. Next, align the protractor so that the 0-degree mark is at one end of the line and the 180-degree mark is at the other end. Finally, mark a point at 142.5 degrees on the protractor, and draw a ray from the vertex through that point to create the angle of 142.5 degrees.
I generally use a pencil and ruler. To construct the right angle to draw it I also use compasses. To measure the right angle to draw it I also use a protractor.
To find the degree of angle of a side of a triangle, a protractor is needed to measure the angle. Place the '0' on the protractor on the point of the angle and look at the top part to determine degree of angle. To measure the length of a triangle side, a simple ruler can be used to measure the length.
Basically just draw the angles according to instructions. -with a protractor and a ruler.
use a protractor and a ruler
You cannot, you must use a protractor.
To construct an angle of 142.5 degrees, you can start by drawing a straight line using a ruler. Then, using a protractor, mark a point on the line to serve as the vertex of the angle. Next, align the protractor so that the 0-degree mark is at one end of the line and the 180-degree mark is at the other end. Finally, mark a point at 142.5 degrees on the protractor, and draw a ray from the vertex through that point to create the angle of 142.5 degrees.
An angle ruler is a tool used to measuring angles like a protractor. An angle ruler is more accurate than a protractor.
by using a ruler and a compass
I generally use a pencil and ruler. To construct the right angle to draw it I also use compasses. To measure the right angle to draw it I also use a protractor.
To find the degree of angle of a side of a triangle, a protractor is needed to measure the angle. Place the '0' on the protractor on the point of the angle and look at the top part to determine degree of angle. To measure the length of a triangle side, a simple ruler can be used to measure the length.
A ruler
You don't always need a protractor to make an angle, just use a normal ruler.
Construct 2 perpendicular lines which will meet at 90 degrees then by bisecting this angle wll give a 45 degree angle
It is possible to construct a 20 degree angle using only Ruler and Compass. I happened to stumble across a method that is highly accurate. It is posted on my blog. Check the related link
Basically just draw the angles according to instructions. -with a protractor and a ruler.