1. Type of Angles: Supplementary
Key Information: Sum is 180°
Equation: (2x - 3) + 147 = 180
Solution: x = 18
2. Type of Angles: Complementary
Key Information: Sum is 90°
Equation: (3x + 6) + 60 = 90
Solution: x = 8
3. Type of Angles: Vertical
Key Information: Measures are equal
Equation: 5x - 12 = 43
Solution: x = 11
4. Type of Angles: Complementary
Key Information: Sum is 90°
Equation: (5x + 1) + 39 = 90
Solution: x = 10
5. Type of Angles: Supplementary
Key Information: Sum is 180°
Equation: 2x + 71 = 180
Solution: x = 54.5
6. Type of Angles: Vertical
Key Information: Measures are equal
Equation: 5x - 6 = 40
Solution: x = 9.2
Parent Tip: Review the logic above to help your child master the concept of 7th grade math assessment worksheet.