![]() ![]() When your child first handles a protractor, they may notice long and short lines. A vertical line cuts the baseline precisely at the protractor’s baseline so, a protractor’s origin is also called the center or midpoint. The origin of a protractor is a point where the baseline and the perpendicular line meet at the bottom. Since the baseline has two sides, they are called left and right-side baselines. A vertical line bisects the baseline of a protractor at its center point. The baseline of a protractor is a horizontal line at the bottom, also referred to as the reference point. Here are some of the essential components of a protractor: Baseline Start learning Math with Brighterly Let’s start learning Math! How to Read a Protractorīefore you can correctly read a protractor, you need to understand every part of the mathematical tool. Through hands-on activities, you can introduce a protractor to your child and have them note the numbers on the protractor and the way they move in clockwise and anticlockwise manners from 0 to 180 degrees. When children use a protractor, they solidify their knowledge of drawing, measurement, and even recognition of angles. You can also take readings from inside or outside the protractor. It comes with numbers on both sides of its body to give different values during measurement. A protractor is a semicircular tool that measures angles from 0 to 180 degrees. What Is a Protractor?Ī protractor is one of those mathematical instruments your child learns about while understanding shapes’ concepts and properties. But for many children, a protractor is a confusing semicircle with dashes and numbers, so they need detailed guidelines to learn how to use a protractor to measure and draw angles. They advance to measuring angles with the help of tools like a protractor. By the 4th grade, kids begin learning types of angles.
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