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# Parallel and Perpendicular Lines

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# Polygons Exercises

### Example 1

All regular polygons have side lengths of equal length and angles of equal measure. True or false?

### Example 2

Why is a circle *not* an example of a polygon?

### Example 3

Is there such a thing as a regular nonagon (9 sides)?

### Example 4

What kind of regular polygon has 5 sets of parallel lines?

### Example 5

What is the interior angle sum of a parallelogram?

### Example 6

What is the interior angle sum of a heptagon (7 sides)?

### Example 7

What are the values of *x* and *y*?