Topic 1: Foundations of Geometry

Front

What is a point in geometry?

Back

A point is a specific location in space that has no size or dimension, typically represented by a dot.

Front

What is a line in geometry?

Back

A line is a straight one-dimensional figure that extends infinitely in both directions, having no endpoints.

Front

What is a line segment?

Back

A line segment is a part of a line that is bounded by two distinct endpoints.

Front

What is a ray in geometry?

Back

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

Front

What is a plane in geometry?

Back

A plane is a flat two-dimensional surface that extends infinitely in all directions.

Front

What does the symbol '≅' represent?

Back

The symbol '≅' represents congruence, indicating that two figures have the same shape and size.

Front

What is a vertex in geometry?

Back

A vertex is a point where two or more lines or edges meet, commonly found in angles and polygons.

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint, called the vertex.

Front

What are parallel lines?

Back

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

Front

What is the difference between acute, right, and obtuse angles?

Back

An acute angle is less than 90 degrees, a right angle is exactly 90 degrees, and an obtuse angle is greater than 90 degrees but less than 180 degrees.