They all have vertical symmetry. This means you can draw a mirror line down through the middle of each shape and divide it into two reflected halves. Remember vertical means from top to bottom.

Reflect the shape in the line \(x = -1\). The line \(x = -1\) is a vertical line which passes through -1 on the \(x\)-axis. The line \(y = 1\) is a horizontal line which passes through 1 on the ...

Crows can recognize geometric patterns, suggesting that humans aren't unique in understanding shape structure.

Crows in a lab were able to distinguish shapes that exhibited right angles, parallel lines, and symmetry, suggesting that, ...

and he greatly extended the scope of the mathematical theory of symmetry known as representation theory. “He is a master in combining tools from geometry, algebra and analysis to obtain new ...