If you draw a line on the girst parallelogram, then you see that the left side does not mirror the right side, thus not being symmetrical. The second shape that looks like a pentagon would by symmetrical and you wold draw the line right down the middle because then the left side would mirror the right side.

The other shape that would work would be the bottom left shape because if you draw a line of symmetry right down the middle of that shape, you can see that both sides are symmetrical and that the left side would mirror the right side.

6 0

3 years ago

Three research departments have 10 ,6 , and 8 members, respectively. Each department is to select a delegate and an alternate to

Andreyy89

Hi !

$\left( \begin{array}{c}10\\2\end{array}\right) \times \left( \begin{array}{c}6\\2\end{array}\right)\times \left( \begin{array}{c}8\\2\end{array}\right) = 18900$

6 0

4 years ago

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