Question

in figure 23, ABCD is a parallelogram. find the values of a, b, c and d​

Answer 1

Step-by-step explanation:

3 angles of the triangle = 180 degrees

3a + 7a + 2a = 180

12 a = 180

a= 15 degrees

3a = 45 degrees

7a = 105 degrees

2a = 30 degrees

3a,7a,2a's angle is same for its opposite angles

3a= b = 45 degrees

7a =c= 105 degrees

2a =d= 30 degrees