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Parallel and Perpendicular Lines

Parallel and Perpendicular Lines

Parallel and Perpendicular Lines: Get in Line, Get in Shape True or False

1. How many sets of parallel line segments are there in a regular octagon? -> 1
2. How many sets of parallel line segments are there in a regular pentagon? -> 2.5
3. What is the sum of all the interior angles in a dodecagon (12 sides)? -> 1800°
4. What is the measure of one interior angle in a regular heptagon (7 sides)? -> 1260°
5. Which of the following is a summary of Euclid's parallel postulate? -> If two lines are parallel and crossed by a transversal, their corresponding angles will be congruent
6. What is the minimum number of right angles possible in a quadrilateral? -> 2
7. Which of the following shapes cannot have any parallel lines? -> Decagon
8. Which of the following shapes must have at least one set of parallel lines? -> Trapezoid
9. Which of the following shapes must have at least one set of perpendicular segments? -> Right triangle
10. Which of the following shapes must have at least one set of perpendicular segments? -> Regular quadrilateral

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