Basic Geometry & Proofs

Front

What are Alternate Interior Angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines.

Front

If lines l and m are parallel, what can be said about the measures of corresponding angles?

Back

Corresponding angles are equal.

Front

What is the measure of angle 3 if angle 1 is 52 degrees and lines l and m are parallel?

Back

Angle 3 is also 52 degrees.

Front

What does the Reflexive Property state?

Back

Any geometric figure is congruent to itself.

Front

What is the SAS (Side-Angle-Side) Postulate?

Back

If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.

Front

If angle 1 is 52 degrees, what is the measure of angle 7 if lines l and m are parallel?

Back

Angle 7 is 128 degrees.

Front

What is the Transitive Property in geometry?

Back

If a = b and b = c, then a = c.

Front

What does it mean for two angles to be Corresponding Angles?

Back

They are in the same position on different parallel lines cut by a transversal.

Front

What is the definition of Parallel Lines?

Back

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