The techniques used are useful for solving all kinds of other geometry problems too ... 360 The sum of interior angles in a triangle is 180˚. In an equilateral triangle, all three angles are ...

You may hear students say words like ‘paralyzed’ triangle for isosceles and equilateral triangles after noticing the restrictive movements of these triangles upon dragging. Properties of symmetry: - ...

And they shall twist their paper clips into Orwellian polygons. The post Jeff Smith’s Math Puzzle for April 18, 2025 appeared first on Alameda Post.

The ancient Greek mathematician Euclid proved in his Elements of Geometry that there are only five Platonic solids – the regular tetrahedron (four sides that are equilateral triangles), the cube (six ...

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to ...