QUADRANGLE
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.
Video Examples: Quadrangles
Examples of Quadrangle
The above figures are the examples of convex quadrangles.
Solved Example on Quadrangle
Ques: Which of the figures is a concave quadrangle?
Choices:
A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 4
Correct Answer: C
Solution:
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.
Quick Summary
- A quadrangle has 4 sides and 4 angles.
- Quadrangles can be convex or concave.
- All quadrilaterals are quadrangles.
🍎 Teacher Insights
Use visual aids and real-world examples to illustrate different types of quadrangles. Emphasize the difference between convex and concave shapes.🎓 Prerequisites
- Polygons
- Angles
- Sides
Check Your Knowledge
Q1: Which of the following is NOT a quadrangle?
Q2: A quadrangle with only one pair of parallel sides is called a:
Frequently Asked Questions
Q: Is a square a quadrangle?
A: Yes, a square is a specific type of quadrangle where all sides are equal and all angles are 90 degrees.
Q: Can a quadrangle have curved sides?
A: No, a quadrangle must have four straight sides.