Parallelogram - equal opposite parallel sides and equal opposite angles, Congruent - having the same size and same shape , Equilateral Triangle - a triangle with all three sides of equal length. All of the angles are acute (less than 90 degrees) ., Parallel Sides - a pair of sides that would never cross, Scalene Triangle - a triangle with no equal sides and no equal angles , Quadrilateral - a shape with four sides , Obtuse Angle - an angle that is bigger than 90 degrees , Acute Angle - an angle that is smaller than 90 degrees , Right Angle - a 90 degree angle , Isosceles Triangle - a triangle with two equal sides and two equal angles, Polygon - a closed shape with straight sides, Perimeter - a math concept that measures the total length around the outside of a shape (P = L + L + L + L), Area - the extent or measurement of a surface (A=LxW), Length - the measurement or extent of something from end to end, Dimensions - a measurable extent of some kind, such as length, breadth, depth, or height., Height - the measurement from base to top, Cubic Unit - a unit of measurement used to quantify volume, defined as the volume of a cube where each side is one unit long, Trapezoid  - a quadrilateral with only one pair of parallel sides., Rectangle - a type of quadrilateral that has its parallel sides equal to each other and all the four vertices are equal to 90 degrees., Square - a two-dimensional shape which has four sides of equal length, Pentagon - a shape with five sides , Rhombus - a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides., Perpendicular Lines - two straight lines joined to a common point making a 90 ∘ angle with each other,

Geometry & Measurement

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