Flashcard 3.2 - Geometric Proofs

Front

What is the Symmetric Property of Congruence?

Back

If two figures are congruent, then they can be expressed in either order. For example, if A ≅ B, then B ≅ A.

Front

What does it mean for a point to be the midpoint of a segment?

Back

A midpoint divides a segment into two equal parts.

Front

What is the definition of a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is the Substitution Property in geometry?

Back

If two quantities are equal, one can be substituted for the other in any expression.

Front

What is the definition of a point in geometry?

Back

A point is a location in space that has no size or dimension.

Front

What is the definition of congruence in geometry?

Back

Two figures are congruent if they have the same shape and size.

Front

What is the definition of a segment in geometry?

Back

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

Front

What is the definition of an angle?

Back

An angle is formed by two rays that share a common endpoint.

Front

What is the definition of 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 the definition of a line in geometry?

Back

A line is a straight one-dimensional figure that has no thickness and extends infinitely in both directions.