Flashcard Review (Lessons 4-1 ~ 4-3)

Front

What is the measure of angle STR in triangle PQR if S and T are midpoints of PQ and PR respectively and angle PQR is 70 degrees?

Back

The measure of angle STR is 70 degrees.

Front

Which statement is NOT true about parallel lines?

Back

Parallel lines intersect at one point.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position at each intersection where a straight line crosses two others.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that are on the same side of the transversal and inside the two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of the transversal and inside the two lines.

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

The corresponding angles are equal.

Front

If two lines are perpendicular, what is the measure of the angles formed?

Back

The angles formed are right angles, each measuring 90 degrees.

Front

What is the relationship between the slopes of parallel lines?

Back

Parallel lines have the same slope.

Front

What is the relationship between the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are negative reciprocals of each other.

Front

In triangle geometry, what is the significance of midpoints?

Back

Midpoints divide the sides of a triangle into two equal segments.