Chapter 3: Q25 (page 105)
The sum of the measures of the interior angles of a polygon is known to be between 2100 and 2200. How many sides does the polygon have?
Short Answer
The polygon has 14 sides.
Chapter 3: Q25 (page 105)
The sum of the measures of the interior angles of a polygon is known to be between 2100 and 2200. How many sides does the polygon have?
The polygon has 14 sides.
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Get started for freeClassify each pair of angles as alternate interior angles, same-side interior angles, or corresponding angles.
and
Use two lines of notebook paper as parallel lines and draw any
transversal. Use a protractor to measure
Measure one pair of alternate 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
Given: ; bisects
Find the measure of
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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