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Preview questions
1. What is the sum of the angles on a straight line?
90 degrees · 180 degrees · 360 degrees · 120 degrees
2. If two lines intersect, what is formed?
Complementary angles · Supplementary angles · Vertical angles · Adjacent angles
3. What type of angles are formed when two parallel lines are cut by a transversal?
Complementary angles · Alternate interior angles · Adjacent angles · Linear pair
4. Which of the following is true for vertically opposite angles?
They are always equal · They are always supplementary · They are always complementary · They are always adjacent
5. What is the measure of a right angle?
45 degrees · 90 degrees · 180 degrees · 360 degrees
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