Rectangle

A 4-sided flat shape with straight sides where all interior angles are right angles (90?). Also opposite sides are parallel and of equal length. Example: A square is a special type of rectangle. Try moving any point below:

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Other Definitions with Letter R

• Radian
• Radical
• Radicant
• Radius
• Radius(Polygon)
• Radix
• Random
• Random sample
• Range(statistics)
• Range of a function
• Rate of Return
• Ratio
• Rational Expression
• Rational Function
• Rational Number
• Ray
• Real Number
• Real Numbers
• Reciprocal
• Rectangle
• Rectangular Prism
• Recurring decimal
• Recursive
• Reduce
• Reflection
• Reflection symmetry
• Reflex angle
• Regular Polygon
• Regular Polyhedron
• Relative frequency
• Relatively Prime
• Remainder
• Rent
• Repeating Decimal
• Revolution
• Rhombus
• Right Angle
• Right Triangle
• Rigid
• Rise
• Risk
• Risk management
• Roman numerals
• Root
• Rotation
• Rotational Symmetry
• Rounding
• Row
• Rule of 72
• Ruler
• Run