Triangles - What are triangles?
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted as triangle ABC.
Types of triangles
Triangles can be classified according to the lengths of their sides: 1.An equilateral triangle has all sides the same length 2.An isosceles triangle has two sides of equal length. 3.A scalene triangle has all its sides of different lengths.
Triangles can be classified according to their angle : 1.Right angle triangle is a triangle with one of its angle exactly equal to 90°. 2.Obtuse angle triangle is a triangle with one of its angle greater than (>) 90°. 3.Acute angle triangle is a triangle with all three angle less than (<) 90°.
Triangles in everyday life
bridges ,musical instrument
ice cream cone,tripod ,yatch
roofs, swimming flippers
How to make a trianle origami box ?
For the origami triangle box, you will need 3 smallish pieces of square paper. They can be one sided, as the white side ends up being hidden. 1. Start with a square piece of paper, plain side up.Fold the paper in half. 2. Fold the top corners toward the bottom point, then open to create these creases.
3. Fold both layers of the bottom point up to the top of the model, then open. 4. This is one completed unit, You need three. So make 2 more of these! 5. Insert one unit inside the other. WE ARE DONE HERE!