Q4W7 Thursday: Parallel Lines & Angle Relationships

____ never cross and stay the same distance apart.

• Parallel lines
• Intersecting lines
• Converging lines
• Curved lines

Example of Parallel Lines

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Vertical angles ​ formed by two intersecting lines, they are 2 angles that are ​ (a)   of each other, and they are always ​ (b)   .

• opposite
• congruent
• complementary
• acute
• similar
• supplementary

Example of vertical angles

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Example of Adjacent angles

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Adjacent angles share a ___ and a ___.

• shared vertex and a shared edge
• common vertex and a common side
• common angle and a common line
• common point and a common plane

Adjacent angles ________

• do not overlap

• add up to 90 degrees
• cannot share a common vertex
• are always equal

Complementary angles ...

• Two angles that are equal in measure.
• Two angles that sum to 180 degrees.
• Two angles that sum to 90 degrees.
• Two angles that sum to 360 degrees.

Supplementary angles ...

• Two angles that are equal in measure.
• Two angles that sum to 180 degrees.
• Two angles that sum to 90 degrees.
• Two angles that sum to 360 degrees.

Example of Supplementary angles

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• Linear pair

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