Rays
Every ray starts at the vertex. The baseline points right, and each other ray's direction is its angle from the
baseline, counterclockwise, as a protractor reads it: 90° points straight up. Turn a ray into a line through the
vertex with the button after it. Click any angle on the figure to label, mark or shade it, or click the vertex or
near a ray's end to put a named point there.Each direction is measured from the baseline, counterclockwise. Drag the ∠ to change it.
On the figure, click an angle or a ray to label or style it, or the vertex or near a ray's end to add a point.
Math Figures Angles Generator