Math Playground Protractor (2024)

FAQs

What is the highest number on a protractor? ›

The half-circle protractor is commonly used to measure angles (Figure 9). The inner number scale rises from 0 to 180, from right to left, and the outer scale goes from 0 to 180, left to right.

Hence, the smallest angle that can be measured using a normal protractor is 1o.

To measure 30 degrees without a protractor, you can use a simple method. Draw a straight line, then create a perpendicular line from it. The angle formed where the two lines meet is 90 degrees. Now, bisect this angle by drawing a line from the intersection point, and the angle between the two lines will be 30 degrees.

Staedtler Protractor, 6", 360 degree, Clear | staples.ca.

A protractor can be read using its inner readings or its outer readings depending on the angle that is formed. Each inner reading and outer reading supplements each other, i.e., they add up to 180°. For example, 0° + 180° = 180°, 10° + 170° = 180°, and so on.

You can make a rhombus or an isosceles triangle with a protractor. A protractor can help you measure existing angles too, like if you're taking a geometry test and need to compare angle measurements. Graphic artists, architects, and other professionals who need to make angles use protractors.

The geometry protractor have two scales marked on it: outer and inner. The outer scale starts from 0° and goes up to 180° in a clockwise direction, and the inner scale has the same range in the counterclockwise direction.

Digital Protractor

Bosch's digital angle finder is arguably the most accurate tool we tested, and certainly the most idiot proof. Press each of its legs into a corner and get a digital readout to a tenth of a degree.

Rulers/Protractors:

Rulers are an allowable tool (but not required) in high school. Protractors are required tools on items for grades 4-7. Protractors are an allowable tool (but not required) in grade 8 and high school.

A protractor is a semi-circular tool used to draw and measure angles. It is marked with degrees from 0 to 180 degrees. It can be directly used to measure any angle from 0 to 360 degrees. The markings are made in two ways, 0 to 180 degrees from right to left and vice versa.

What is the highest number an angle can have? ›

A circle is divided into 360 equal degrees, so that a right angle is 90°. For the time being, we'll only consider angles between 0° and 360°, but later, in the section on trigonometric functions, we'll consider angles greater than 360° and negative angles.

0-360 DEGREES MEASURING RANGE: The protractor's measurement range is 360 degrees of angular side to meet your imum measurement needs. Measuring range is 0-360 degrees, high accuracy angle measuring ruler.

The protractor is exactly placed at the center aligning with the 0º line and a line is drawn also known as the reference line, followed by counting the angle from 0º to 180º in the anticlockwise direction, and going up to another 90° angle from the point where it ended at 180º to make it a 270º angle.