Geometry 3.1-3.3 Flashcard

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside two parallel lines and on opposite sides of a transversal.

Front

What is a line parallel to line AD?

Back

A line that runs in the same direction as line AD and never intersects it, such as line EH.

Front

How do you find the measure of an angle in a transversal situation?

Back

Use the properties of angles formed by a transversal intersecting parallel lines, such as corresponding angles, alternate interior angles, and alternate exterior angles.

Front

What does it mean for lines to be skew?

Back

Skew lines are lines that do not intersect and are not parallel, existing in different planes.

Front

What is a line perpendicular to line AD?

Back

A line that intersects line AD at a right angle (90 degrees), such as line AB.

Front

Identify the properties of parallel lines cut by a transversal.

Back

When parallel lines are cut by a transversal, corresponding angles are equal, alternate interior angles are equal, and consecutive interior angles are supplementary.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two parallel lines cut by a transversal.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

Define vertical angles.

Back

Vertical angles are the angles opposite each other when two lines intersect; they are always equal.

Front

What is the relationship between supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.