# Parallel lines 1

From Karnataka Open Educational Resources

### Objectives

Students will be able to identify parallel and intersecting lines.

### Estimated Time

20 minutes

### Prerequisites/Instructions, prior preparations, if any

Knowledge about line, line segment

### Materials/ Resources needed

Digital: Click here to open files

Non-digital : paper, pencil, ruler, protractor, compass

### Process (How to do the activity)

Download this geogebra file from this link.

**Procedure:**

- What are Parallel Lines?
- How can you tell that lines are parallel?
- Two lines ‘i’ and ‘h’ are parallel to each other
- Identify parallel lines which do not have a common meeting point in the same plane
- Identify parallel lines do not intersect if extended till infinite in both the directions.
- Measure the distance between the lines and identify the equidistance (move point 'G') between the parallel lines
- Students will use sticks or straws to create parallel line segments. They will prove the line segments are parallel by measuring the distance between the line segments.
- What are intersecting lines?
- Identify intersecting lines (two or more) meet only at one point always and also can cross each other at common vertex (which is the point of intersection).

### Evaluation at the end of the activity

- What is the difference between parallel and intersecting lines?
- Can parallel lines also be intersecting lines?

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