Measuring Angles

2 interactives

Make the angle

Students type a number into an input box and an angle arm swings to match, live. Checks target angles including reasoning steps (supplementary, etc.).

InteractiveMade by Glyph

Make the angle (protractor)

Students sweep a ray to build target angles, then read the same ray against the opposite baseline, a protractor has two scales, and the baseline decides the reading. From Sean's protractor pair.