Sum of 4 angles of quadrilateral Manufacturer,Supplier and Exporter in India
Product Code : EL-MLK-4479
Jlab Export is a leading Sum of 4 angles of quadrilateral Manufacturer,and suppliers in India
Sum of 4 angles of quadrilateral (code EL-MLK-4479) is a geometry teaching set of 5 parts that proves every quadrilateral has an angle sum of 360°. Maths teachers use it in school lessons and maths lab activities when pupils move on from triangles to four-sided figures. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Principle demonstrated | Every quadrilateral has an angle sum of 360° |
| Parts | Set of 5 parts |
| Quality check | Each set is visually inspected before dispatch |
| Pack quantity | Each set (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-MLK-4479 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Sum of 4 Angles of Quadrilateral Set Used For?
The result follows from the triangle: a diagonal divides any quadrilateral into two triangles whose angles each total 180°, so the four angles together make 360°. The property holds for every quadrilateral — square, rectangle, parallelogram or irregular — and a physical proof helps pupils see why, rather than only measuring with a protractor. The set fits naturally after the triangle angle-sum lesson in middle-school geometry and in maths lab periods.
What to Specify When Ordering
- Quantity — the number of sets for your classrooms or maths lab.
- Triangle angle-sum set — add the Sum of 3 angles of triangle set if you teach both properties.
- Delivery — the destination city or port and, for export, your delivery terms.
Frequently Asked Questions
What does this set prove?
That the four angles of every quadrilateral add up to 360°. It is supplied as a set of 5 parts.
How does it relate to the Sum of 3 angles of triangle set?
They teach linked results. The triangle set is a magnetic set of 4 parts for the 180° angle sum of a triangle; this set of 5 parts proves the 360° angle sum of a quadrilateral.
What should an export enquiry include?
The number of sets, destination country and port or city, the delivery terms you prefer (such as FOB or CIF), any packing or labelling instructions and a tender reference if there is one.
Who manufactures it?
JLab (Jain Laboratory Instruments Pvt Ltd) makes it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of maths lab and science teaching equipment in India, incorporated in 2017 and located on Hargolal Road, Ambala, Haryana. The quadrilateral set is produced in JLab’s own works and not resold from a trader, so schools, colleges, dealers and importers buy straight from the factory, each set is looked over before dispatch, and repeat orders go back to the same manufacturer. JLab exports worldwide and ships to buyers in every region — for example Chad in Central Africa, the USA in North America, Latvia in Northern Europe, Togo in West Africa and Nepal in South Asia.
Related Angle-Sum Teaching Aids
- Sum of 3 angles of triangle — a magnetic set of 4 parts for classroom demonstration of the triangle angle sum.
- Angle Sum Property of Quadrilateral — magnetic cut-out angles from a quadrilateral, with a magnet at the back.
- Angle Sum Property of Triangle — magnetic cut-out angles from a triangle.
Browse the Maths Lab Kit range or all Maths Lab Equipment.
Request a Quote
Use the Add To Cart button on this page to raise an enquiry, or message JLab via the contact page stating how many sets you need and where they should be delivered.
Last updated: 16 October 2026
