# data[].attributes.body
Step 1: Given line segment AB, construct line segment A'B' by copying its distance measurement with a straight edge and compass.

Question:

Which is easier to construct; a line using a ruler, or a line from a straight edge and a compass?

# data[].attributes.attachment_link.title
Geometric Constructions: Copy an Segment

# data[].attributes.headline
Step 2: Determine the midpoint (part 1 of 2)

# data[].attributes.subject
Step 2: Determine the midpoint (part 1 of 2)

# data[].attributes.body
This is done by making arcs which are sections of Circle A and Circle B. (NOTE: Only the section used to identify the midpoint is constructed. )

Make the upper arcs above line segment AB; label pt 'C'.

Next, construct the lower arcs from pt A and pt B; label pt 'D'.

[NOTE: If this was a Venn Diagram, this would represent the intersection of the 2 circles.]

QUESTION: In your opinion, explain which is easier, constructing arcs to find the endpoints (C and D), or constructing circles?

# data[].attributes.headline
Step 3:  Determine the midpoint (part 2 of 2)

# data[].attributes.subject
Step 3:  Determine the midpoint (part 2 of 2)

# data[].attributes.body
Beginning at 19 seconds, use a straightedge to connect point 'C' and point 'D'.

The intersection of line segment A'B' and line segment CD is the midpoint; label the point 'M'.

QUESTION: Does line segment CD, a vertical line, look like it could be 90 degrees? Explain.

# data[].attributes.body
Comments:

In Geometry, please note a straightedge is preferred but a ruler is usually allowed. A straightedge has no labels/markings.

QUESTION: What is the degree measure of angle CMB?

QUESTION: Is angle CMB congruent to angle AMD? Explain.

Congratulations! You have just created a perpendicular bisector (CD) of line segment AB at it's midpoint M.

# data[].attributes.attachment_link.title
How to draw a Perpendicular Bisector of a line.

# data[].attributes.headline
Type I: Construction Of A Perpendicular Bisector, from midpoint, 'M'

# data[].attributes.subject
Type I: Construction Of A Perpendicular Bisector, from midpoint, 'M'

# data[].attributes.body
Remember, line segment AB was given and to demonstrate understanding, this line segment will need to be copied as line segment A'B.

# data[].attributes.wish_content.attachment_props.question
Which line segment is vertical or perpendicular to your constructed line segment A'B'?

# data[].attributes.body
Take this opportunity to prepare for your exam with this review. Perhaps use a colored pencil to see if you get the same results.

Question: Is it easier to construct seeing the exisiting arcs and lines, or from scratch?