Unit 3 Review

Calculate the measure of angle x if the sum of angles in a triangle is 180 degrees and the other two angles are 45 and 75 degrees.

• 60 degrees

• 120 degrees

• 90 degrees

• 30 degrees

If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?

• 120 degrees

• 90 degrees

• 60 degrees

• 45 degrees

Explain the difference between vertical angles and adjacent angles.

• Vertical angles are angles that are next to each other.

• Vertical angles are angles that share a common side and vertex but do not overlap.

• Adjacent angles are opposite angles formed by the intersection of two lines.

• Vertical angles are opposite angles formed by the intersection of two lines, while adjacent angles are angles that share a common side and vertex but do not overlap.

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

• Corresponding angles are always acute.

• Corresponding angles are equal to 90 degrees.

• Corresponding angles are supplementary.

• Corresponding angles are congruent.

In a right triangle, what is the relationship between the two acute angles?

• Supplementary

• Opposite

• Complementary

• Parallel

If two lines are perpendicular to the same line, what can you say about the two lines?

• The two lines are collinear.

• The two lines are skew lines.

• The two lines are parallel.

• The two lines intersect at a right angle.

If two lines are parallel and a transversal intersects them, what can you say about the alternate interior angles?

• Alternate interior angles are parallel.

• Alternate interior angles are supplementary.

• Alternate interior angles are perpendicular.

• Alternate interior angles are congruent.

If two lines are perpendicular, what is the relationship between the slopes of the lines?

• Positive reciprocals

• Equal

• Parallel

• Negative reciprocals

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

• Positive reciprocals

• Equal

• Parallel

• Negative reciprocals

• 55^o alternate
• 55^o corresponding
• 125^o alternate
• 125^o corresponding