A brief illustrated guide to 'scissors congruence' − an ancient geometric idea that’s still fueling
This is a story about geometry, algebra and many different dimensions, best read with construction paper, scissors and tape on hand.

In math class, you probably learned how to compute the area of lots of different shapes by memorizing algebraic formulas. Remember “base x height” for rectangles and “½ base x height” for triangles? Or “
Read These Next
Colors are objective, according to two philosophers − even though the blue you see doesn’t match wha
An object’s color appears differently under different lighting and against different backgrounds −…
‘Extraordinary claims require extraordinary evidence’ − an astronomer explains how much evidence sci
An astronomer breaks down 3 key components that allow researchers to make groundbreaking discoveries…
Japanese women have long sacrificed their surnames in marriage − politics and demographics might cha
Having to give up their maiden names has a real-world impact for Japanese women in the workplace.