Adding and Subtracting Segments in Geometry

This video tutorial demonstrates how to add, multiply, and subtract line segments using a straightedge and compass. It covers the process of adding segments AB and CD, constructing a segment 3AB by repeating segment AB three times, and subtracting segment AB from CD. The tutorial provides step-by-step instructions for each operation, emphasizing the use of geometric tools to achieve accurate results.

What is the first tool you need to use to add segments AB and CD?

• Protractor

• Straightedge

• Calculator

• Ruler

After drawing a long line segment, what is the next step to add segments AB and CD?

• Use a protractor to measure angles

• Draw another line segment

• Open the compass to the length of AB

• Measure the length of CD

How do you label the copied segment AB?

• C''D''

• C'D'

• A''B''

• A'B'

What is the result of adding segments AB and CD?

• A'B' + C'D'

• A'B' - C'D'

• A'B' / C'D'

• A'B' * C'D'

How many times do you need to copy segment AB to construct 3AB?

• Four times

• Three times

• Five times

• Two times

What is the first step in constructing 3AB?

• Draw a short line segment

• Draw a long line segment

• Measure the length of CD

• Use a protractor to measure angles

Where do you place the pointed end of the compass to start copying segment AB?

• At any random point on the line segment

• At the midpoint of the line segment

• At the start of the line segment

• At the end of the line segment

What is the first step in subtracting segment AB from CD?

• Copy segment CD first

• Use a protractor to measure angles

• Copy segment AB first

• Draw a short line segment

Where do you place the pointed end of the compass to subtract segment AB from CD?

• At point C'

• At point D'

• At point A'

• At point B'

What is the resulting segment when you subtract AB from CD?

• A'D'

• A'B'

• C'D'

• C'B'