Name



Name __________________________________ Date ___________________

LESSON 10.3

Practice B

For use with pages 664–670

Find the measure of the given arc or chord.

1.

2.

3.

4.

5.

6.

Find the value of x.

7.

8.

9.

10.

11.

12.

In Exercises 13–16, determine whether is a diameter of the circle.

13.

14.

Name __________________________________ Date ___________________

LESSON 10.3

Practice B continued

For use with pages 664–670

15.

16.

17. Proof Complete the proof.

GIVEN: is a diameter of (F. (

PROVE: (

|Statements |Reasons |

| is a diameter of (F. ( |__?__ |

|__?__ |All right angles are congruent. |

|( |__?__ |

|( |__?__ |

|(AED ( (AEB |__?__ |

|__?__ |Corresponding parts of congruent triangles are congruent. |

|( |__?__ |

18. Proof Complete the proof.

GIVEN: is a diameter of (U. (

PROVE: (PUT ( (QUS

|Statements |Reasons |

| is a diameter of (U. ( |__?__ |

|__?__ |Theorem 10.3 |

|( ( ( |__?__ |

|(PUT ( (QUS |__?__ |

19. Briefly explain what other congruence postulate you could use to prove that

(PUT= (QUS in Exercise 18.

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BC

m

LM

m

QS

AC

m

PQR

KLM

m

m

PR

AC

AC

BD

AD

AB

AE

DE

BD

BE

AC

AD

AB

AE

PQ

PT

QS

PQ

PT

QS

UP

UQ

UT

US

AC

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