Question

angles.
4. Two adjacent angles of a parallelogram are in the ratio 4 : 5. Find the measure of each of its
angles.
5. Two sides of a parallelogram are in the ratio 5 : 3. If its perimeter is 64 cm, find the lengths of​

Answer 1

Answer:

4x +5x=180

9x=180

x=20

so,

4*20=80

5*20=100

Answer 2

Answer:

4.Let,

two angles of a parallelogram are in the ratio = 4:5.

sum of the adjacent angles of parallelogram=180 degrees

so,

4x:5x=180 degrees

9x=180 degrees

x=180\9

x=20 degrees

the first adjacent angle =4x=4×20=80 degrees

the second adjacent angle=5×20=100 degrees

80,100