Angel Sum Property of Triangle
Product Code : JA-MLI-1732
The Angel Sum Property of Triangle (SKU JA-MLI-1732) is a magnetic manipulative for teaching that the three angles of any triangle add up to 180°. The three angles are formed at the vertices by each pair of adjacent sides; the model provides cut-outs of these angles with a magnet on the back of each, so the teacher can place them side by side on a magnetic board and show that they form a straight angle. JaincoLab makes this triangle angle sum model in Ambala, India for school maths labs.
Specifications
The model is a set of cut-outs of the three angles of a triangle with magnets on the back for use on a magnetic board; dimensions, material and colours are not listed and are confirmed on the quotation.
| Product | Angel Sum Property of Triangle |
| SKU | JA-MLI-1732 |
| Contents | Cut-outs of the three angles of a triangle |
| Mounting | Magnet on the back of each piece |
| Display | For demonstration on a magnetic board |
| Property shown | The angles of a triangle add up to 180°, a straight angle or two right angles |
Teaching the angle sum property of a triangle
The angle sum property of a triangle is shown by joining the three cut-out angles at one point on a straight line on the board, where they fill the straight angle of 180° exactly.
- Verifying that the three angles of a triangle add up to 180°
- Showing the result as a straight angle, two right angles or a half-turn
- Whole-class demonstration on a magnetic board
- Lead-in to the exterior angle property of a triangle
- Maths lab activity before students repeat it with their own paper triangles
Scope of supply and ordering
The listing covers one Angel Sum Property of Triangle manipulative with magnetic angle cut-outs. A magnetic board is not listed as part of the item. Accessories, spares and quantities are confirmed on the quotation.
Minimum order quantity, lead time and packing are confirmed on each quotation for the quantity ordered and the delivery destination. JaincoLab supplies single-school orders as well as bulk requirements for school groups, colleges and education projects.
Frequently asked questions
What does the triangle angle sum model demonstrate?
It demonstrates that the three angles of any triangle add up to 180°, the same as a straight angle or two right angles.
How are the pieces used in class?
The angle cut-outs have magnets on the back and are arranged side by side on a magnetic board during the demonstration.
Does it come with a magnetic board?
No board is listed with the item. Mention it in your enquiry if you need one, and it will be confirmed on the quotation.
Related products
- Angel Sum Property of Quadrilateral
- Angel Property of Cyclic Quadrilateral
- Triangle Kit
- Pattern Making of Triangle
See the full maths lab equipment range from JaincoLab for other items used in the same lessons.
Request a quote
To order the Angel Sum Property of Triangle, send the SKU JA-MLI-1732, the quantity and the delivery destination through the JaincoLab contact page or email [email protected]. For tender or project supply, see our tenders page.
