In this case, ∠BOC = 120°.įor measuring angles with a protractor, let us use the following steps and relate to the figure given below. Step 4: If the angle to be measured is formed on the right-hand side from the center of the protractor, we need to use the inner readings of the protractor.If the angle to be measured is formed on the left-hand side from the center of the protractor, we need to use the outer reading of the protractor. Step 3: Decide which readings are to be followed.Step 2: Place the baseline of the protractor on the ray which is the base of the angle.Step 1: We first need to pIace the center (hole) of the protractor on the vertex O.
#PROTRACTOR TOOL HOW TO#
Observe the following figure to know how to read a protractor and relate to the steps given below. Each inner reading and outer reading supplements each other, i.e., they add up to 180°. How to Read a Protractor?Ī protractor can be read using its inner readings or its outer readings depending on the angle that is formed. It has two readings - the outer reading and the inner reading that help to measure a given angle. The image will only appear when students click on the button.īutton Icon and Label can be changed for custom images, the same way as for rulers and protractors.A protractor is an instrument which is very easy to use. The image tool Button can also be displayed for custom image tools. You can also specify the size of the image: insert values in pixels into the Width and Height fields. " on the Image field and either upload an image from your computer or insert image URL, then click Ok.Įnable Show rotate icon? to allow students to rotate the image.
Selecting a custom Image Tool allows authors to use their own image as a feature and allow students to interact with it.
#PROTRACTOR TOOL SOFTWARE#
When the feature is selected, the ruler type can be specified in the Image field.įor this, enter any of the following ruler types into the text box:ĭPI refers to "dots per inch" and is a setting you can choose when exporting images from many graphic design software applications. There is a set of default rulers available in Learnosity, featuring rulers of different sizes, with inch or centimetre measurements. Students can easily interact with image tools by dragging and rotating them. The Image Tool feature in Learnosity allows authors to use rulers and protractors as part of a question stimulus, or add their own custom defined images as features.