Review of 3.1-3.5

Front

What is a line that intersects another line at a right angle called?

Back

A perpendicular line.

Front

If two lines are parallel, what is the relationship between their slopes?

Back

The slopes of parallel lines are equal.

Front

What are alternate interior angles?

Back

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

Front

If two angles are complementary, what is the sum of their measures?

Back

The sum of their measures is 90 degrees.

Front

What is the definition of parallel lines?

Back

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

Front

Solve for x: 2x + 3 = 15.

Back

x = 6.

Front

What is the measure of angle <1 if <1 and <2 are supplementary and <2 measures 75 degrees?

Back

<1 measures 105 degrees.

Front

What do you call angles that are on the same side of the transversal and inside the two lines?

Back

Consecutive interior angles.

Front

If two lines are skew, what does that mean?

Back

They do not intersect and are not parallel.

Front

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

Back

The sum is always 180 degrees.