Question

A, B, C, D is a parallelogram in which angle CAD=40°, angle BAC=35° and angle COD = 65° calculate 1,2,3,4
1.angle ABD
2.angle BDC
3.angle ACB
4.angle CBD​

Answer 1

Answer:

1.angle COD=AOB (vertically opposite)

angleDAB+ angleABD+ angleAOB

35°+ angle ABD +65°= 180°

100° +angle ABD=180°

angle ABD= 180°-100°

angleABD= 80°