Question

PQRS is an isosceles trapezium . Then find the measure of <R​

Answer 1

Answer:

69°

Step-by-step explanation:

since it is isosceles trapezium

then,

a+27=3a-57

57+27=3a-a

84=2a

84/2=a

42=a

then,3a-57=3*42-57

=126-57=69°