4.MD.7 Common Core Worksheet - Free Printable

I'll solve each angle measurement problem step by step.

Problem 1: ∠IGF
- We have a right angle (90°) at G
- One part is 40°
- So ∠IGF = 90° - 40° = 50°

Problem 2: ∠ABC
- We have a right angle (90°) at B
- One part is 79°
- So ∠ABC = 90° - 79° = 11°

Problem 3: ∠XYZ
- We have a straight line (180°)
- One angle is 45°
- So ∠XYZ = 180° - 45° = 135°

Problem 4: ∠PIG
- We have a straight line (180°)
- One angle is 18°
- So ∠PIG = 180° - 18° = 162°

Problem 5: ANT
- We have a right angle symbol at N, so ∠ANT = 90°

Problem 6: ∠NMO
- We have a right angle (90°) at M
- One part is 65°
- So ∠NMO = 90° - 65° = 25°

Problem 7: ∠LIP
- We have a right angle (90°) at I
- One part is 45°
- So ∠LIP = 90° - 45° = 45°

Problem 8: RED
- We have a straight line (180°)
- One angle is 100°
- So ∠RED = 180° - 100° = 80°

Problem 9: ∠MOP
- We have a right angle (90°) at O
- One part is 5°
- So ∠MOP = 90° - 5° = 85°

Final Answer:
∠IGF = 50°
∠ABC = 11°
∠XYZ = 135°
∠PIG = 162°
∠ANT = 90°
∠NMO = 25°
∠LIP = 45°
∠RED = 80°
∠MOP = 85°