you can find their value by halving 130°. Angles on a straight line also add up to 180°. If a straight line has been split into three separate angles, it looks as if three corners of a triangle ...

Each triangle type has a different colour (pink for scalene, red for equilateral, blue for isosceles), which allows you and the students to refer to the triangles without having to introduce their ...

To expand students mathematical understanding of non-prototypical triangles as children frequently develop very restricted conceptions of geometric shapes. They often identify them solely based on ...