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${S_1} = 2{S_2}$

$2{S_1} = {S_2}$

${S_1} = {S_2}$

${S_1} = \dfrac{1}{3}{S_2}.$

${S_1} = 2{S_2}$

$2{S_1} = {S_2}$

${S_1} = {S_2}$

${S_1} = \dfrac{1}{3}{S_2}.$

$\widehat {MEN} = {150^0}$        

$\widehat {MEN} = {90^0}$          

$\widehat {MEN} = {120^0}$

$\widehat {MEN} = {60^0}$

$\widehat {MEN} + \widehat {MAN} = {90^0}$ 

$\widehat {MEN} + \widehat {MAN} = {120^0}$

$\widehat {MEN} + \widehat {MAN} = {180^0}$

$\widehat {MEN} + \widehat {MAN} = {150^0}$

$\widehat {MEN} + \widehat {MAN} = {90^0}$ 

$\widehat {MEN} + \widehat {MAN} = {120^0}$

$\widehat {MEN} + \widehat {MAN} = {180^0}$

$\widehat {MEN} + \widehat {MAN} = {150^0}$