A quarter circle or a right angle is 90°(90 degrees) How to measure an angle with a protractor. Place the midpoint of the protractor on the vertex of the angle. Line up one side of the angle with the zero line of the protractor (where you see the number 0). Read the degrees where the other side crosses the number scale. Take care to read from ...

Online protractor or angle problems with acute, obtuse, reflex angles. Further complementary, supplementary and angles at a point. Use on interactive whiteboards, angles can be automatically shown or measured with a protractor.

Our virtual protractor is highly accurate and offers features such as zooming, rotating, and repositioning for precise measurements. Measure Angles: You can directly measure the angle of any object displayed on your screen. Move the Protractor: Drag the …

2023年12月20日 · Digital Angle Finder Protractor, Angle Finder Ruler with 7inch/200mm, Angle Measuring Tool for Woodworking/Carpenter/Construction/DIY Measurement(2 Batteries Included) (Enhanced ABS)

2024年7月17日 · Although 90° can be quickly drawn with a protractor, this is an essential skill for students to accurately construct 90° with a compass and ruler. In this article, we will learn to draw an angle of 90 degrees with a compass and ruler step by step. What is 90° Angle?

Along with dual measurement ranges of 0 to 90-Degree and 0 to 180-Degree, this tool has a high visibility reverse contrast display for easy viewing. Digital Angle Gauge and Level can measure or set angles, check relative angles with zero calibration feature, or can be used as a digital level

Choose from our selection of angle protractors, including protractors, Starrett protractors, and more. In stock and ready to ship.