# In Exercises 27 to 30, fill in the missing reasons for each geometric proof. Given: B D → bisects ∠ A B C Prove: m ∠ A B D = 1 2 ( m ∠ A B C ) Exercises 29, 30 PROOF Statements Reasons 1. B D → bisects ∠ A B C 1. ? 2. m ∠ A B D = m ∠ D B C 2. ? 3. m ∠ A B D + m ∠ D B C = m ∠ A B C 3. ? 4. m ∠ A B D + m ∠ A B D = m ∠ A B C 4. ? 5. 2 ( m ∠ A B D ) = m ∠ A B C 5. ? 6. m ∠ A B D = 1 2 ( m ∠ A B C ) 6. ?

### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
Publisher: Cengage Learning
ISBN: 9781285195698

### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
Publisher: Cengage Learning
ISBN: 9781285195698

#### Solutions

Chapter
Section
Chapter 1.5, Problem 29E
Textbook Problem

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