A scalene triangle has 3 sides of different lengths and 3 unequal angles. An isosceles triangle has 2 sides of equal length. (The dashes on the lines show which are equal in length.) The angles at the ...

A shape has a line of symmetry when the folded part sits perfectly on top with all edges matching. The number of lines of symmetry in a regular polygon is equal to the number of sides. A shape has ...

In his 1622 work “The Assayer,” Galileo commented on the necessity of mathematics for understanding the natural world. “Philosophy is written in this very great book. . . . It is written in ...

Children can learn about math by moving during the “Geometry in Motion” program June 6 at Mentor Public Library’s Main Branch, 8215 Mentor Ave. Dancer Tom Evert will use dance and improvisation to ...

Kids can learn about math by moving during the “Geometry in Motion” program March 22 at Mentor Public Library’s Main Branch, 8215 Mentor Ave. Dancer Tom Evert will use dance and improvisation to teach ...