University:
Bradley University
Course:
MTH 119 | Calculus With Review B
Academic year:

2021
Views:

213

Pages:

1
Author:

Gudrunecg9m

Practice 1-4 Part 2 Name Class Date Measuring Angles 1. Name the angle at the right in three different ways. ∠AOB, ∠BOA, ∠O Name an angle or angles in the diagram described by each of the following. 2. complementary to ∠BOC ∠AOB 3. supplementary to ∠BOC ∠AOC 4. adjacent and congruent to ∠AOC ∠BOC Find the measure of each angle. 5. ∠EBF 40° 6. ∠EBA = 90°(73° + 17°) ∠EBA = 17° 7. ∠DBB = 17° 8. ∠DBC = 107°(17° + 90°) 9. ∠ABF = 4° 10. ∠DBF = (90° - 17°) + 51° ∠DBF = 73° + 51° ∠DBF = 124° 11. Name all acute angles in the figure. ∠AOB, ∠BOC, ∠COD, ∠DOE, ∠EOF, ∠FOG, ∠GOH, ∠HOA 12. Name all obtuse angles in the figure. ∠AOF, ∠BOE, ∠COF, ∠DOG 13. Name all right angles in the figure. ∠AOB, ∠BOC, ∠COD, ∠DOE, ∠EOF, ∠FOG, ∠GOH, ∠HOA Use the diagram to the right for Exercises 14 and 15. Solve for x. Find the angle measures. 14. ∠AOB = x + 3, ∠BOC = 2x + 11, ∠AOC = 4x - 7 x + 3 + 2x + 11 = 4x - 7 3x + 14 = 4x - 7 3x = 15 x = 5 ∠AOB = 5 + 3 = 8° ∠BOC = 2(5) + 11 = 21° ∠AOC = 4(5) - 7 = 13° 15. ∠COD = 9x + 4, ∠BOC = 4x - 1, ∠BOD = 14x - 6 9x + 4 = 14x - 6 9x = 14x - 10 -5x = -10 x = 2 ∠COD = 9(2) + 4 = 22° ∠BOC = 4(2) - 1 = 7° ∠BOD = 14(2) - 6 = 22°