The document contains three geometric figures with angles labeled. It uses angle properties and relationships to derive the values of angles in each figure, but is unable to determine the value of x in any of the figures due to insufficient information provided.

2. ABC = ACB, ABC is an isosceles triangle.  V
CAB = 180 - 80 - 80 = 20 , DAB is an isosceles triangle. d
V
BEC = 180 - 80 - 50 = 50 , BEC is an isosceles triangle. d
V
BFE = 180 - 20 - 50 = 110 , (angle property of a triangle). d
DFC = 110 , (vertically opposite angles). d
FDC = 180 - 110 - 30 = 40 , (angle property of a triangle). d
EFD = 180 - 110 = 70 , (angle at a straight line). d

3. ABC = ACB, ABC is an isosceles triangle.  V
CAB = 180 - 80 - 80 = 20 . d
BEC = 180 - 80 - 60 = 40 . d
BFE = 180 - 10 - 40 = 130 , (angle property of a triangle). d
DFC = 130 , (vertically opposite angles). d
FDC = 180 - 130 - 20 = 30 , (angle property of a triangle). d
EFD = 180 - 130 = 50 , (angle at a straight line). d

4. ABC = ACB, ABC is an isosceles triangle.  V
CAB = 180 - 80 - 80 = 20 . d
BEC = 180 - 80 - 40 = 60 . d
BFE = 180 - 40 - 60 = 80 , (angle property of a triangle). d
DFC = 80 , (vertically opposite angles). d
FDC = 180 - 80 - 40 = 60 , (angle property of a triangle). d
EFD = 180 - 60 = 100 , (angle at a straight line). d
The value of x could not be obtained in all the questions due to insufficient information.

5. Find the value of x in each figure

6. Find the value of x in each figure

7. Find the value of x in each figure

10. Find the value of x in each figure.

11. Find the value of x in each of the figure.

12. Find the value of x for the below figure