The reason the shape changes from 3D to 2D when you get to six triangles has to do with the number of degrees in an equilateral triangle. There are 60 degrees at each vertex of the triangle, so ...

An angle is formed when two straight lines, or rays, meet at a point, called a vertex. Angles are measured in degrees.

An angle is formed when two straight lines, or rays, meet at a point, called a vertex. Angles are measured in degrees. An angle can also describe an amount of turn.

Angles and shape: Translation. Part of Learn & revise. ... If we translate one vertex at a time we can see that vertex a has translated 3 squares down and 3 squares to the left.