HGeometry A 1.1 Points, Lines, Planes

Front

What is a point in geometry?

Back

A point is a specific location in space that has no size, dimension, or shape. It is usually represented by a dot and labeled with a capital letter.

Front

Define a line in geometric terms.

Back

A line is a straight one-dimensional figure that extends infinitely in both directions. It has no endpoints and is usually represented by two points on the line.

Front

What is a plane in geometry?

Back

A plane is a flat, two-dimensional surface that extends infinitely in all directions. It is defined by three non-collinear points.

Front

What does it mean for two planes to intersect?

Back

When two planes intersect, they do so along a line. This line is the set of points that are common to both planes.

Front

What is a vertex in geometry?

Back

A vertex is a point where two or more lines, line segments, or rays meet. It is often used in the context of angles and polygons.

Front

What is the difference between a line segment and a line?

Back

A line segment is a part of a line that has two endpoints, while a line extends infinitely in both directions without endpoints.

Front

What is a ray in geometry?

Back

A ray is a part of a line that starts at a point (the endpoint) and extends infinitely in one direction.

Front

How do you denote a line segment?

Back

Front

What is the notation for a ray?

Back

A ray is denoted by its endpoint and another point on the ray, for example, @@ ightarrow{AB}@@ indicates a ray starting at point A and passing through point B.

Front

What is the significance of collinear points?

Back

Collinear points are points that lie on the same straight line. They are important in defining lines and understanding geometric relationships.