Question

If two adjacent angles of a parallelogram pqrs are(10y - 9) and( 8 y + 45 )find all the four angles of a parallelogram

Answer 1

Answer:

Step-by-step explanation:

10y -9 + 8y + 45 = 180

18y+ 36 = 180

18y = 180-36

18y = 144

y = 144/18

y = 8cm

10y-9 = 80-9 = 71

8y+45 = 64+45 = 109

Side 3 = 71

Side 4= 109

Therefore, 71, 109, 71and 109 are the 4 angles of parallelogram