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Collinear Points
CONCEPTS
Properties
• Angles, denoted by a “∠”, can be formed when 2 or more lines intersect
• The angle of a line is 180°
PRACTICE PROBLEMS
Question 1 What is ∠ AEB? (see figure below)?
-- Answer -- 52°
180° - 38° - 90° = 52°
Question 2 Lines AB and CD intersect at A. The measure of ∠ BAC is 20°. What is the measure of ∠ BAD?
-- Answer -- 160°
180° - 20° = 160°
ACT PRACTICE PROBLEMS
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