Guides and how-tos for measuring angles, slope, and level with the Protractor iPhone app.https://protractorapp.com/en-ushttps://protractorapp.com/blog/what-is-the-measure-of-an-angle/https://protractorapp.com/blog/what-is-the-measure-of-an-angle/What the measure of an angle means, the units it's given in, and three ways to find it — with a protractor, with your phone's sensors, or with simple trigonometry.Tue, 30 Jun 2026 00:00:00 GMThttps://protractorapp.com/blog/how-to-use-an-angle-finder/https://protractorapp.com/blog/how-to-use-an-angle-finder/How to use an angle finder step by step — sliding bevels, digital angle gauges, and the angle finder app on your phone — so you read or transfer any angle correctly.Fri, 26 Jun 2026 00:00:00 GMThttps://protractorapp.com/blog/angle-degrees-explained/https://protractorapp.com/blog/angle-degrees-explained/What a degree really is, the angles worth memorizing, and how to read angle degrees with a protractor or your phone — a plain-English guide to measuring angles.Tue, 23 Jun 2026 00:00:00 GMThttps://protractorapp.com/blog/how-to-measure-an-angle/https://protractorapp.com/blog/how-to-measure-an-angle/Five reliable ways to measure an angle — with a protractor, with your phone, with the maths, or with nothing but a ruler — and when to reach for each one.Tue, 09 Jun 2026 00:00:00 GMThttps://protractorapp.com/blog/how-to-measure-roof-pitch/https://protractorapp.com/blog/how-to-measure-roof-pitch/How to measure roof pitch in degrees and as an X-in-12 ratio — with a phone, a level and tape, or from inside the attic — plus how to convert between the two.Tue, 09 Jun 2026 00:00:00 GMThttps://protractorapp.com/blog/how-to-use-a-protractor/https://protractorapp.com/blog/how-to-use-a-protractor/A clear, step-by-step guide to measuring and drawing angles with a protractor — plus how to read any angle without one using your iPhone's sensors.Tue, 09 Jun 2026 00:00:00 GMT