Question

Adjacent angles of parallelogram are of measure2×&7× then find the value of 'X'.
10
20
180
90​

Answer 1

Answer:

x=20

Step-by-step explanation:

adjacent angles are:

2x and 7x

therefore all angles are:

2x, 7x,2x and 7x ---(opposite angles of parallelogram are equal)

Sum of all angles=360°---(angle sum property of quadrilateral)

therefore,

2x+7x+2x+7x=360

therefore, 18x=360

therefore, x=360/18

therefore, x=20