Chapter 3: Q4. (page 104)
For each polygon, find (a) the interior angle sum and (b) the exterior angle sum.
Octagon.
Short Answer
- The interior angle sum for Octagon is .
- The exterior angle sum for Octagon is .
Chapter 3: Q4. (page 104)
For each polygon, find (a) the interior angle sum and (b) the exterior angle sum.
Octagon.
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Complete each statement with the word always, sometimes, or never.
Two lines perpendicular to a third line are perpendicular to each other
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 |
Use two lines of notebook paper as parallel lines and draw any
transversal. Use a protractor to measure
Measure one pair of same side interior angles. Repeat the experiment with another transversal. What appears to be true?
Classify each pair of angles as alternate interior angles, same-side interior angles, corresponding angles, or none of these.
and
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