Chapter 3: Q4 (page 89)
If a line is parallel to plane X and also to plane Y, then plane X and plane Y are parallel
The blank should be filled with sometimes.
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Classify each pair of angles as alternate interior angles, same-side interior angles, corresponding angles, or none of these.
and 
Complete each statement with the word always, sometimes, or never.
Two lines parallel to the same plane are parallel to each other.
If what are the measures of the other numbered angels?
Classify each pair of angles as alternate interior angles, same-side interior angles, corresponding angles, or none of these.
and
Alan tried to prove Postulate 10 as shown below. However, he did not have valid proof. Explain why not.
If two parallel lines are cut by a transversal, then corresponding angles are congruent.
Given ; transversal cuts and
Prove:
Statement | Reason |
1. | Given |
2. | If two parallel lines are cut by transversal then alt. int. are |
3. | Vert. are |
4. | Transitive Property |
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