Line

Trace the edges of the following objects and say what type of lines you have got.

a. Horizontal edge of a pencil box

b. Broken piece of a bangle

C. Surface of a loose thread

d. Vertical edge of a notebook

e. Both edges of a ruler

f. Unsharp edges of a pair of scissors

g. Long edge of a set square

Identify the parallel line segment in the figure given below:

Identify the parallel line segment in the figure given below:

Identify the parallel line segment in the figure given below:

Identify the parallel line segment in the figure given below:

Identify the parallel line segment in the figure given below:

In the given figure, 

How many line segments are formed with these three points?

What extends indefinitely on both sides?

What do we call the line segment extended indefinitely in both directions?

In the following diagram three lines $l,m,$ and $n$ are intersected by a transversal $t$, where $l\parallel m$, and $m\parallel n$. Prove that the lines $l$, and $n$ are parallel to each other.

Prove that “Lines which are parallel to the same line are parallel to each other”.

Number of points a line can have?

Two intersecting lines can intersect at only one point.

Arms of scissors represent parallel lines.

Write the real life examples of intersecting lines.

What are intersecting lines? write the examples of such line

Does this quadrilateral have parallel sides?

_____ line $/$ lines can pass through two distinct points in a plane.

A boy in a public garden is trying to tie two rubber ropes between three wooden poles. He has already tied one rope to two of the wooden poles ( $AB \text{and }CD$). He is in the process of tying the second rope (between $EF \text{and} AB$) which needs to be parallel to the first one, as shown in picture below. At what angle should he tie the rope to the middle pole if $ \angle AGH = 130 °$.

The angle at which the rope should be tied to the middle pole is _____ degrees.