Definition of Quadrangle

  • A quadrangle is a polygon with four sides and four angles.

More about Quadrangle

  • Quad means 4.
  • All the quadrilaterals (such as parallelogram, rectangle, square, trapezoid, etc.) are quadrangles.
  • A quadrangle can be either convex or concave.

Examples of Quadrangle

  • The above figures are the examples of convex quadrangles.

  • The above figures are the examples of concave quadrangles.

Solved Example on Quadrangle

Which of the figures is a concave quadrangle?

A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 4
Correct Answer: C
Step 1: A concave quadrangle is a four-sided polygon in which a rubber band does not fit and leaves some gap.
Step 2: Figure 3 is a concave quadrangle as it has four sides and a rubber band could not fit around it.

Step 3: So, Figure 3 is a concave quadrangle.

Related Terms for Quadrangle

  • Angle
  • Concave Polygon
  • Convex Polygon
  • Four
  • Parallelogram
  • Polygon
  • Quadrilateral
  • Rectangle
  • Rhombus
  • Side
  • Square
  • Trapezoid