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Angles

Vocabulary about angles

QuestionAnswer
acute angle An angle measuring less than 90 degrees
obtuse angle An angle more than 90 degrees and less than 180 degrees
perpendicular Lines are perpendicular when they meet at 90 degrees
triangle A shape with three sides and three angles
square A shape with four equal side and four right angles
rectangle A four sided shape with equal opposite sides and four right angles
right angle An angle equal to exactly 90 degrees
parallel Lines are parallel if they could be extended and never intersect
vertical A line is vertical if it is at a 90 degree angle to the horizon
horizontal A line is horizontal if its direction is 90 degrees from vertical
Created by: tonyfram
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