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# Unit 2 Vocab

### Math Expressions 6th grade Unit 2

TermDefinition
Acute triangle A triangle with three acute angles. An acute angle has a measure that is greater that 0 degrees and less than 90 degrees
Area The amount of surface covered or enclosed by a figure. Area is measured by finding the number of same size units of area required to cover a shape without gaps or overlaps
Base of a parallelogram Any side of a parallelogram can be the base. The base just must make a 90 degree angle with the height.
Base of a rectangle Any side of the rectangle can be the base.
Base of a triangle Any side of a triangle can be the base. The base just must make a 90 degree angle with the height.
Complex Figure A figure made by combining simple geometric figures, such as rectangles and triangles.
Coordinates Each point in the coordinate plane corresponds to an ordered pair of numbers called its coordinates
Dimensions The height, length, or width of a figure
Height The perpendicular distance from the base to a vertex that is not on the base. Finding this distance may require extending the base.
Hexagon A polygon with 6 sides
Obtuse Triangle A triangle with one obtuse angles. An obtuse angle has a measure that is greater that 90 degrees and less than 180 degrees
Pentagon A polygon with 5 sides
Octagon A polygon with 8 sides
Perimeter The distance around a figure
Perpendicular A quadrilateral in which both pair of opposite sides are parallel and angles are congruent
Parallelogram Lines, line segments, or rays are perpendicular if they form a right angle. A right angle measures 90 degrees
Regular Polygon A polygon with all sides the same length
Rhombus A parallelogram with all sides the same length
Trapezoid A quadrilateral with exactly one pair of parallel sides
Right Trangle A triangle with one right angle.
Square centimeter (cm^2) A unit of area equal to the area of a square with one-centimeter sides.
Vertex A point common to two sides of an angle or polygon, or 3 edges of a solid figure. The point of a pyramid.
Created by: bryank