Constructing Parallel and Perpendicular Lines

The video tutorial teaches how to construct parallel and perpendicular lines using a ruler and set square. It covers the steps to create parallel lines at specific distances and perpendicular lines both on and outside a given line. The tutorial concludes by encouraging students to practice these constructions on their own.

What is the first step in constructing parallel lines using a ruler and a set square?

• Place a ruler and mark two points 8 cm apart.

• Draw a line and mark two points on it.

• Slide the set square along the ruler.

• Remove the set square and draw lines.

In the construction of parallel lines, what is the purpose of sliding the set square along the ruler?

• To align the vertical edge with the marked points

• To measure the distance between points

• To mark the midpoint of the line

• To draw the lines directly

What is the distance between the parallel lines AB and PQ in the initial construction example?

• 6.8 centimeters

• 10 centimeters

• 8 centimeters

• 5 centimeters

How far apart are the parallel lines EF and GH constructed in the example?

• 10 centimeters

• 5 centimeters

• 6.8 centimeters

• 8 centimeters

When constructing a perpendicular line to a given line at a point on it, what is the first step?

• Remove the set square and draw the perpendicular line.

• Slide the set square along the ruler.

• Mark a point outside the line.

• Draw a line and mark a point on it.

What tool is used to ensure the perpendicularity of the line in the construction process?

• Compass

• Protractor

• Divider

• Set square

In the example of constructing a perpendicular line QR to line MN, where is point Q located?

• Outside line MN

• At the end of line MN

• On line MN

• At the midpoint of line MN

What is the first step in constructing a perpendicular line from a point outside a given line?

• Remove the set square and draw the perpendicular line.

• Draw a line and mark a point on it.

• Draw a line and mark a point outside it.

• Place the ruler on the line and slide the set square.

What is the final step in constructing a perpendicular line to a given line from a point outside it?

• Place the ruler on the line

• Remove the set square and draw the line

• Slide the set square along the ruler

• Mark a point on the line

In the example of constructing line LT perpendicular to line AB, where is point L located?

• At the end of line AB

• On line AB

• Outside line AB

• At the midpoint of line AB