Question

13. The sum of the two opposite angles of a parallelogram is 1 40°. Find the measures
of all the angles.​

Answer 1

Answer:

70,110,70,110

Step-by-step explanation:

opposite angle are Equal=X

so, 2x=140

x=70

adjacent angles are supplementary

so, x+y=180

70+y=180

Answer 2

Let the opposite angle be x there is 2 opposite angle so there will be 2x

so,

2x=140°

x=70°

So,

the others angle be x

the sum of parallelogram=360°

70+70+x+x=360°

140+2x=360°

2x=360-140

2x=220

x=220/2

x =110°

70°+70°+110°+110°=360°

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