Parallelogramm va uning xossalari

$ABCD$ - parallelogramm; $\angle BAD = x$; $\angle ABC = 2x$; $x = ?$ $ABCD$ - parallelogramm; $\angle BAD = x$; $\angle ABC = 3x$; $x = ?$ $ABCD$ - parallelogramm; $\angle BAD = x$; $\angle ABC = \beta$; $\angle BCD = 80^\circ - x$; $\beta = ?$ $ABCD$ - parallelogramm; $\angle BAD = 2x$; $\angle ABC = \beta$; $\angle BCD = 96^\circ - x$; $\beta = ?$ $ABCD$ - parallelogramm; $BE \perp AD$; $\angle ABE = 42^\circ$; $\angle BCD = x = ?$ $ABCD$ - parallelogramm; $BE \perp DC$; $\angle CBE = 36^\circ$; $\angle BAD = x = ?$