Geometry Constructions

Front

What is a line in geometry?

Back

A straight figure having no thickness and extending infinitely in both directions.

Front

What is a ray in geometry?

Back

A part of a line that starts at a point and extends infinitely in one direction.

Front

What is a point in geometry?

Back

A location in space that has no size or dimension.

Front

What is a perpendicular bisector?

Back

A line that divides a segment into two equal parts at a 90-degree angle.

Front

What is an angle bisector?

Back

A line that divides an angle into two equal angles.

Front

How do you construct a perpendicular bisector of a segment?

Back

Use a compass to draw arcs from both endpoints of the segment, then connect the intersection points.

Front

What is the definition of parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

How do you construct a line parallel to a given line through a point?

Back

Use a compass to measure the distance from the point to the line, then replicate that distance on the opposite side.

Front

What is the radius of a circle?

Back

The distance from the center of the circle to any point on its circumference.

Front

What is the diameter of a circle?

Back

The distance across the circle through its center, equal to twice the radius.