Best answe gets !

which of the following explains how δbei could be proven similar to δceh using the aa similarity postulate?

∠bei ≅ ∠ceh because vertical angles are congruent; rotate δceh 180° around point e, then translate point c to point b to confirm∠ibe ≅ hce.

∠bei ≅ ∠ceh because vertical angles are congruent; reflect δceh across segment fg, then translate point c to point b to confirm∠ibe ≅ hce.

∠bei ≅ ∠ceh because vertical angles are congruent; rotate δceh 180° around point e, then dilate δceh to confirm segment eb ≅ segment ec.

∠bei ≅ ∠ceh because vertical angles are congruent; reflect δceh across segment fg, then dilate δceh to confirm segment eh ≅ segment ei.

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above