How do you use a protractor interactive?
Using the interactive protractor app on screen Move the on-screen protractor using (desktop) left mouse drag or (tablet) single finger touch and drag. Protractor is highlighted in green when moving. Rotate the on-screen protractor using (desktop) shift-key + left mouse drag or (tablet) two-finger touch and rotate.
How do you measure angles with a protractor?
How to use a protractor
- Line up the vertex of the angle with the dot at the center of the protractor.
- Line up one side of the angle with 0 degrees on the protractor.
- Read the protractor to see where the other side of the angle crosses the number scale.
How do you use a compass and protractor?
Place the metal point in the approximate middle of a piece of paper gently, trying not to poke through the paper. Holding this point steady, bring the pencil end of the compass down and rotate the compass, drawing the pencil end in a circle around the point and creating a perfect circle.
What can I do if I don’t have a protractor?
However, if you don’t have a protractor handy, you can determine the size of an angle using the basic geometric principles of triangles. You’ll need a scientific calculator to solve the equations. Most smartphones are equipped with them, but you can also download a free app or access a free calculator online.
Can I use my iPhone as a protractor?
Protractor helps you to measure angles quickly and easily. This app turn your iPhone into a handy pocket protractor that can measure angles in both degrees and radians.
How do I use my iPhone as a protractor?
Use iPhone as a level
- Open Measure.
- Tap Level, then hold iPhone against an object, such as a picture frame. Make an object level: Rotate the object and iPhone until you see green. Match the slope: Tap the screen to capture the slope of the first object.
Why does a protractor have two scales?
Measuring Angles The two scales make it easy for us to measure angles facing different ways. To measure the size of angle ABC, place the protractor over the angle so that the centre of the protractor is directly over the angle’s vertex, B; and the base line of the protractor is along the arm, BA, of the angle.
How is a protractor like a ruler?
A ruler is for measuring segments and drawing segments of a specific length. A protractor can be used to measure angles as well as draw angles of a specific measure.
What is pencil compass?
: a compass with a pencil on one leg for use in drawing.