Draw 10 symbols used in technical drawings and their meanings.

1. Circle with a dot in the center - indicates a hole or drilled hole
2. Triangle - indicates a right angle or perpendicularity
3. Arrow - indicates the direction of movement or flow
4. Square with a diagonal line - indicates a rough surface or material removal
5. Parallel lines - indicates symmetry or parallelism
6. X - indicates a section or cutaway view
7. Zigzag line - indicates a flexible or movable part
8. T-shaped symbol - indicates a weld or welding point
9. Gear symbol - indicates a gear or mechanical component
10. Lightning bolt - indicates electrical components or electricity.

1. Circle: Represents a hole or a cylindrical feature.
2. Square: Represents a square or rectangular surface.
3. Triangle: Represents a triangular surface or a chamfer.
4. Line: Represents a straight edge or contour.
5. Dot: Represents a center point or a hole.
6. Crosshairs: Represents the intersection of two lines or axes.
7. Arrow: Represents a direction or a force.
8. Scale: Represents the relationship between the size of the drawing and the actual size of the object.
9. Dimension line: Represents the length, width, or height of a feature.
10. Leader line: Connects a note or dimension to a feature on the drawing.