1.
Which of the following angle pairs are congruent because parallel lines are cut by a transversal?
Correct Answer(s)
A. Corresponding
B. Alternate interior
C. Alternate exterior
Explanation
The angle pairs that are congruent because parallel lines are cut by a transversal are corresponding angles, alternate interior angles, and alternate exterior angles. Corresponding angles are formed when a transversal intersects two parallel lines and are located in the same position on each line. Alternate interior angles are formed when a transversal intersects two parallel lines and are located between the two lines on opposite sides of the transversal. Alternate exterior angles are formed when a transversal intersects two parallel lines and are located outside the two lines on opposite sides of the transversal. Therefore, the correct answer is corresponding, alternate interior, and alternate exterior angles.
2.
What is the relationship between angles a and b?
Correct Answer
A. Vertical
Explanation
Vertical angles are formed when two lines intersect. They are opposite each other and have equal measures. In this case, angles a and b are vertical angles because they are opposite each other and have the same measure.
3.
What type of angles a and c are?
Correct Answer
B. Corresponding
Explanation
Angles a and c are corresponding angles. Corresponding angles are formed when a transversal intersects two parallel lines. In this case, angle a and angle c are on the same side of the transversal and are in corresponding positions relative to the parallel lines. Corresponding angles have the same degree measure and are equal to each other.
4.
What is the relationship between angle b and c?
Correct Answer
D. Same-side interior
Explanation
Angle b and angle c are same-side interior angles. Same-side interior angles are a pair of angles that are on the same side of the transversal line and are inside the two parallel lines. In this case, angle b and angle c are both inside the two parallel lines and on the same side of the transversal line. Therefore, they are same-side interior angles.
5.
What is the relationship between the angles b and g?
Correct Answer
C. Alternate interior
Explanation
Alternate interior angles are formed when a transversal intersects two parallel lines. In this case, the angles b and g are alternate interior angles because they are on opposite sides of the transversal and inside the two parallel lines.
6.
Write the degree of angle a in the box below.
Correct Answer
63, 63 degrees, sixty-three, sixty three
Explanation
The given answer options all represent the same value, which is 63 degrees. The different formats, such as numerical (63), written out (sixty-three), and with the word "degrees" included, are all valid ways to express the measure of the angle.
7.
Write the degree for angle a in the box below.
Correct Answer
70, 70 degrees, seventy
Explanation
The answer provided is 70, 70 degrees, seventy. This suggests that the degree for angle a is 70. The three different ways of expressing the degree value (as a numeral, in words, and with the word "degrees") further confirm that the degree for angle a is indeed 70.
8.
Write the degree for angle h in the box below.
Correct Answer
110, 110 degrees, one hundred ten, one hundred and ten
Explanation
The given answer options all represent the same value, which is 110 degrees. It is written in numerical form (110), in words (one hundred ten), and in words with the "and" conjunction (one hundred and ten). Therefore, all of these options are correct representations of the degree for angle h.
9.
Two lines cut by a transversal are proven to be parallel if a pair of _________ angles formed is congruent. These angles appear on opposite sides of the transversal and are outside the lines.
Correct Answer
alternate exterior
Explanation
Alternate exterior angles are formed when a transversal crosses two lines, creating angles on opposite sides of the transversal and outside the two lines. These angles are congruent (equal in measure) when the lines are parallel. This congruence is a key geometric property used to prove whether two lines are parallel. Recognizing and understanding these angles helps in solving problems involving line relationships, crucial in many areas of geometry and practical applications like construction and engineering.
10.
When a transversal intersects two parallel lines, the pairs of corresponding angles are always ______.
Correct Answer
Equal, equal
Explanation
When a transversal (a line that crosses two or more other lines) intersects two parallel lines, the corresponding angles formed are always equal. Corresponding angles are located on the same side of the transversal and in matching positions relative to the parallel lines. This property is a fundamental rule of parallel lines and transversals in geometry.
11.
When two parallel lines are cut by a transversal, eight angles are formed. The pairs of angles that are on opposite sides of the transversal but inside the parallel lines are called ___________ angles. These angles are congruent when the lines are parallel.
Correct Answer
corresponding, Corresponding
Explanation
When two parallel lines are intersected by a transversal, eight angles are created. Among these, corresponding angles are located on the same side of the transversal and in similar positions relative to the parallel lines. These angles are equal in measure—a fundamental property in geometry that facilitates proving the parallel nature of lines and solving for unknown angles, enhancing our understanding of geometric relationships and patterns within different shapes and designs.