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Units 9 & 10 Vocab

Vocab Practice

TermDefinition
point an exact location in a space
line a straight path continuing in both directions with NO endpoints
line segment a part of a line with TWO endpoints
ray a part of a line continuing in one direction with ONE endpoint
right angle an angle measuring EXACTLY 90 degrees
acute angle an angle measuring LESS THAN 90 degrees
obtuse angle an angle measuring MORE THAN 90 degrees but LESS THAN 180 degrees
straight angle an angle measuring EXACTLY 180 degrees
parallel lines lines that will NEVER cross or intersect
intersecting lines lines that cross at ANY angle
perpendicular lines lines that cross and form a right angle (90 degrees)
triangle a polygon with three sides and three angles
quadrilateral a polygon with four sides and four angles
parallelogram a quadrilateral with TWO pairs of parallel sides
trapezoid a quadrilateral with ONE pair of parallel sides
acute triangle a triangle with THREE acute (less than 90 degrees) angles
obtuse triangle a triangle with ONE obtuse (between 90 & 180 degrees) angle
right triangle a triangle with ONE right (90 degrees) angle
square a parallelogram with four equal sides and four right angles
rectangle a parallelogram with four right angles and opposite sides of the same length
rhombus a parallelogram with four equal sides and two acute (less than 90 degrees) and two obtuse (between 90 & 180 degrees) angles
Created by: joshua.mitchell
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