acute angle - an angle that measures less than 90°, angle - two rays with a common endpoint (the vertex), Angle congruency marks - angle marks indicating angles of the same measure, area - number of square units a figure covers (L x W), Attributes of two-dimensional figures - characteristics that define a geometric figure, Classify - applying an attribute to categorize a sorted group, Congruent - equal measure, having exactly the same size and same shape, Conversion - a change from one measurement unit to another measurement unit without changing the amou, Edge - where the sides of two faces meet on a three-dimensional figure, Equiangular - all angles in a polygon are congruent in measure, Equilateral - all side lengths of a polygon are congruent in measure, Face - a flat surface of a three-dimensional figure, Irregular Figure - a polygon with sides and/or angles that are not all congruent, Obtuse angle - an angle that measures greater than 90° but less than 180°, Perimeter - the measurement around a figure (P= L + W + L + W), Polygon - closed figure with 3 or more straight sides, Regular Figure - a polygon with all sides and angles congruent, Right angle - an angle (formed by perpendicular lines) that measures exactly 90°, Side congruency marks - side marks indicating side lengths of the same measure, Three-dimensional figure - a figure that has measurements including length, width (depth), and height, Two-dimensional figure - a figure with two basic units of measure, usually length and width, Volume - the amount of cubic units in a 3D object (L x W x H), Formula - An equation/rule used to solve for the area, perimeter, and volume of a figure, Scalene Triangle - No equal sides on triangle, Isosceles Triangle - 2 equal sides on triangle, Equilateral Triangle - ALL equal sides on triangle, Parallelogram - 2 sets of parallel sides, Trapezoid - 1 set of parallel sides,

Geometry & Measurement

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