What is 2x+5+6b+7a
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Me. i can't figure out this question. give an explanation too. .

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy