Geometry worksheet focusing on parallelogram properties, angles, and side lengths with diagrams and fill-in-the-blank questions.

I. Complete each statement.
1. In a parallelogram, opposite sides are congruent and parallel.
2. In a parallelogram, consecutive angles are supplementary.
3. In a parallelogram, diagonals bisect each other, which means they split each other in half.

II. Complete each statement, using Parallelogram DCBA.
4. If AB = 20, then DC = 20.
5. If AD = 13, then BC = 13.
6. If DB = 22, then DE = 11.
7. If AE = 8, then AC = 16.
8. If m∠DAB = 110°, then m∠ABC = 70°.
9. If m∠DAB = 75°, m∠ADC = 105°.
10. If m∠1 = 35°, then m∠4 = 35°.
11. If m∠ADG = 72°, m∠GDC = 108°.
12. If m∠ABC = 130°, and m∠2 = 35°, m∠2C = 15°.
13. If BC = 3x - 10 and AD = 2x + 3, then x = 13.
14. If EC = x + 5, AC = 3x - 2, AE = 2x - 3, and AD = 14, then x = 5 and y = 7.

III. Find the missing measurements of Parallelogram ADCB.
15. CD = 16
16. DA = 13
17. AC = 18
18. DB = 20
19. CE = 9
20. DE = 10
21. m∠ABC = 110°
22. m∠BCD = 70°
23. m∠BCD = 70°
24. m∠ACD = 40°
25. m∠ADB = 30°
26. m∠DAB = 70°
27. m∠DAB = 70°
28. m∠DAB = 70°
29. m∠EAB = 30°
30. m∠AEB = 110°
31. m∠BEC = 110°
32. m∠CED = 110°
33. m∠BEA = 70°