Only image files are supported at this time. Use your own image with the interactive protractorĬlick the “Custom Image” and enter a link to a publicly accessible image URL as the background, then use the overlay interactive protractor to measure various angles on your own worksheet. Angle protractor pdf#Print out the 6 questions as a PDF (the protractor image will not be included) and practice using your own “real” protractor to measure the angles. Angle protractor download#Download the questions as a PDF worksheet Share the link with all your remote students during zoom class and practice measuring the same set of angles, or assign the same set of questions as homework to the whole class. Use the URL displayed at the top to load the same set of angles. Keep practicing with new questionsĬlick the “New Questions” button to generate a new set of questions. Make sure you are reading off the correct set of markings. Note: there are two scale markings corresponding to left-to-right ( black) and right-to-left ( blue) angle measurement. Angles within 2 degrees will be marked as correct. Check your answersĮnter your answers in the respective boxes, then click “Check Answers” button to check your answers. Protractor is highlighted in red when rotating. Rotate the on-screen protractor using (desktop) shift-key + left mouse drag or (tablet) two-finger touch and rotate. Protractor is highlighted in green when moving. Move the on-screen protractor using (desktop) left mouse drag or (tablet) single finger touch and drag. Using the interactive protractor app on screen To use it, align the horizontal line on the protractor to one of the two lines that make up the angle you want to measure, then read off the angle on the appropriate scale on the curve edge of the protractor. The readings can be taken either to the right or to the left, according to the direction in which the zero on the main scale is moved.More about the Protractor Practice App What is a Protractor?Ī protractor is a tool to help you measure angles, kind of like a ruler, but with degrees markings on a circular edge. Since the spaces, both on the main scale and the Vernier scale, are numbered both to the right and to the left from zero, any angle can be measured. To measure an angle of over 90°, subtract the number of degrees as indicated on the dial from 180°, as the dial is graduated from opposite zero marks to 90° each way. To measure an angle between the beam and the blade of 90° or less, the reading may be obtained direct from the graduation number on the dial indicated by the mark on the swivel plate. When the edges of the beam and blade are parallel, a small mark on the swivel plate coincides with the zero line on the graduated dial. The bevel protractor consists of a beam, a graduated dial and a blade which is connected to a swivel plate (with Vernier scale) by thumb nut and clamp. It reads to 5 arcminutes (5′ or 1 / 12°) and can measure angles from 0° to 360°. The bevel protractor is used to establish and test angles to very close tolerances. Universal bevel protractors are also used by toolmakers as they measure angles by mechanical contact they are classed as mechanical protractors. Angle protractor software#It has wide application in architectural and mechanical drawing, although its use is decreasing with the availability of modern drawing software or CAD. Sometimes Vernier scales are attached to give more precise readings. A bevel protractor is a graduated circular protractor with one pivoted arm used for measuring or marking off angles.
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