Question

9. In parallelogram PQRS, the vertices are taken in order. If angleP:angleQ = 7:3,
then what is the measure of angleR?
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Answer 1

Answer:

54

Step-by-step explanation:

adjacent angles of llgm are supplementry

let common ratio be X

7x+3x=180(proved above)

10x=180x

X=18

7(X)=7x18=126

3(x)=54

OPP. angles are equal

angle R=whixh so ever angle is opp. to it

i.e. either the value is

126°or 54°