Problem 66
Describe each type of angle: acute, right, obtuse, and straight.
Problem 67
What are complementary angles? Describe how to find the measure of an angle's complement.
Problem 68
What are supplementary angles? Describe how to find the measure of an angle's supplement.
Problem 70
If two parallel lines are intersected by a transversal, describe the location of the alternate interior angles, the alternate exterior angles, and the corresponding angles.
Problem 71
Describe everyday objects that approximate points, lines, and planes.
Problem 72
If a transversal is perpendicular to one of two parallel lines, must it be perpendicular to the other parallel line as well? Explain your answer.