How to: Draw a curve in Paint.
Solution:
Click the curve tool and drag the mouse pointer to create a straight line. Click and drag on the line to create a curve.
NOTE: This solution assumes that Paint is opened.
1) Click the curve tool in the tool box.
Curve tool
2) Click a color for the curve in the color palette.
3) Click the desired line width in the tool box.
4) Drag the mouse pointer to draw a straight line.
5) Click where the curve is to occur on the line just created, and drag the mouse pointer to adjust the curve.
6) (Optional) Repeat step 5) for a second arc.