1. Basic Geometric Constructions

2. Construction #1 Use a straightedge to draw a line.
Construct a segment congruent to a given segment.
Given: A B
Use a straightedge to draw a line.
Construct: A1 B1 = AB A1
Now label the point A1 somewhere on the new line.

3. Construction #1
Construct a segment congruent to a given segment.
Set your compass for radius AB and make a mark on the line where B lies.
Given: A B
Construct: A1 B1 = AB l A1 A1 B1
Then, move your compass to line and set your pointer on A1. Make a mark on the line and label it B1.

4. Construction #2 Use a straightedge to draw a ray. Now make an arc.
Construct a angle congruent to a given angle.
Use a straightedge to draw a ray.
Now make an arc.
Make the same arc on the ray.

5. Connect the endpoint and the intersection
Construction #2
Construct a angle congruent to a given angle.
Make another arc
Repeat the arc.
Connect the endpoint and the intersection