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3 cards from this section. Quick, good the night before a test.
What is a linear pair?
Think about angles that share a common ray.
Are vertically opposite angles equal?
Draw two intersecting lines to visually check.
What do we call the angles that are formed when two lines intersect?
Think about angles formed at an intersecting point.
True or False: The sum of the angles in a linear pair is always 90°.
Recall the definition of a linear pair.
Given two lines that intersect creating angles of 80° and x°, find the measure of x.
Focus on the property of equal opposite angles.
Prove that two lines parallel to a third line are parallel to each other.
Identify the corresponding angles carefully.
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