Chapter 3: Q6 (page 103)
Is the given figure a convex polygon, a non-convex polygon or neither?

Short Answer
The given figure is a non-convex polygon.
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Chapter 3: Q6 (page 103)
Is the given figure a convex polygon, a non-convex polygon or neither?

The given figure is a non-convex polygon.
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Find the values of and

Assume that and , name all angels supplementary to .

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 |
State the postulate or theorem that justifies each statement.

State the postulate or theorem that justifies each statement.

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