Question

if the adjacent angles of parallelogram are (2x-5) & (3x+10), find the angles of parallelogram

Answer 1

Since adjacent angles of parallelogram are supplementary(2x+5)+(3x+10)=1805x+15=1805x=180-15x=165/5x=33Since we found the x value we can now find the angles of the parallelogram2(33)+5 = 713(33)+10 = 109

Answer 2

As we know that sum of angles of a pentagon= 540

Since, opposite angles are equal in a ||°gm

2x-5+3x+10+2x-5+3x+10=540

5x+5+5x+5=540

10x+10=540

10x=540-10

10x=530

x=530/10

x=53