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To prove segments are parallel or perpendicular, you would use:

• distance formula

• pythagorean theorem

• midpoint formula

• slope formula

Parallel lines have

• equal slopes

• opposite slopes

• opposite & reciprocal slopes

• congruent sides

Perpendicular lines have

• equal slopes

• opposite slopes

• opposite & reciprocal slopes

• congruent sides

Find the slope

• -5/3
• -3/5
• 5/3
• 3/5

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• nothing

The slopes of parallel lines are...

• the same

• opposite

• always different

Which point has the coordinates (-4,3)

• A

• B

• C

• D

Which point has the coordinates (0,6)

• A

• B

• C

• D