Math Vocab Review

An angle with a measure less than 90 degrees

• acute angle
• obtuse angle
• right angle

two intersecting lines that form right angles

• parallel lines
• perimeter
• perpendicular lines

Having exactly the same size and shape

• congruent
• perimeter
• vertex

the distance around the outside of a figure

• area
• perimeter
• point

an angle that measures exactly 90 degrees

• obtuse angle
• acute angle
• right angle

an angle with a measure greater than 90  degrees but less than 180 degrees

• acute angle
• obtuse angle
• right angle

a closed plane figure made by line segment

• polygon
• heptagon
• octagon

a quadrilateral with all 4 sides equal in length

• rhombus
• trapezoid
• polygon

a quadrilateral with 1 pair of parallel sides and 1 pair of sides that are not parallel

• trapezoid
• parallelogram
• rhombus

a quadrilateral with 2 pairs of parallel and congruent sides

• trapezoid
• parallelogram
• rhombus