Question

Abcdis a parallelogram angle a=70 degree find angle abc

Answer 1

Answer:110

Step-by-step explanation:

Because adjacent angles are supplementary...hence let angle abc be x.

x+70=180

x=110

Answer 2

Answer:

110 degrees

Step-by-step explanation:

In a parallelogram,

opposite angles are equal thus

let the angle abc be x degrees

so its opp angle will be also x  degrees

in the same way angle dab=angle bcd

therefore angle a=angle d=70 degrees

sum of all angles in a parellelogram=360 degrees

therefore x+x+70+70=360 degrees

2x+140=360 degrees

2x=220

x=110 degrees

therefore angle a=110 degrees

or

also sum of angle a + angle b=180  degrees

70+x=180  degrees

x=110 degrees

therefore angle abc = 110 degrees

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