Constructions # 1 warm up

"bisect" means ...

• cut at right angle

• an insect with 2 heads

• divide into 2 equal parts

• intersect

"equidistant" means ...

• far away equilateral triangle

• with 2 equal sides

• at the same distance

• you're in for another headache

The perpendicular bisector of a line segment is ...

• a line segment through the midpoint of this line segment

• the straight line through the midpoint of this line segment and perpendicular to it

• the straight line that bisects the line segment into 2 equal angles

What is the tool being used called?

• Compass
• Circle creator
• Pencil swingy-thing
• Arc maker

This is a

• Compass

• ruler

• pencil

• pointer

We use the ____ as center when we draw a circle with compass

• Compass needle

• Pencil

• Hinge

• my hand

Do you have the following supplies?

1. a compass

2. a ruler

3. a construction packet

4. a pencil not on the compass

• Yes. I am ready to start working

• Not yet, I am getting something.

Objectives for today:

1. Use compass to draw arch and circle.

2. Use compass and straight edge to copy line segment and angle.

3. Use compass and straight edge to bisect line segment and angle.

Pick the work we are doing today in class( pick all correct)

• Draw circle with compass

• Copy line segment

• Bisect line segment

• Bisect angle

If you know what we are doing in today's class, please use the compass to draw as many circles as you can on the front or back of the packet before teacher start teaching.

Type "YES" if you are ready.