Constructions

Name the construction.

• Angle bisector
• Perpendicular line to a point not on a line
• Perpendicular line to a point on the line
• Perpendicular bisector of a line segment

When copying line segment AB using a straight edge and a compass, the compass should be used to:

• Draw an arc above point A
• Measure the length of segment AB
• Draw an arc between point A and point B
• Measure half the length of line segment AB

What is this?

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

What does the word BISECT mean?

• To cut something into more than five pieces.
• It is a plane with two sets of wings.
• A shape that has three sides. 
• To cut something into two congruent pieces or in half.

Which one is the correct construction for a perpendicular bisector?

• 1
• 2
• 3
• 4

What type of construction do you see?

• midpoint

• angle bisector

• perpendicular bisector

• altitude

Name the construction.

• midpoint

• perpendicular through a point on the line

• perpendicular through a point NOT on the line

• Circumcenter of a right triangle

Name the vertex of the angle.

• E

• F

• D

• E, F, and D are vertices

This angle is written as......

•  ∠ABC

•  ∠ACB

• ∠BCA

• ∠CAB