PROOF 16) If two sides of two adjacent acute angles are perpendicular, then the angles are complementary. Given BAL BC Prove 21 and 22 are complementary. Two-Column Proof STATEMENTS 1. BALBC 2. LABC is a right angle. 3. m/ABC = 90° 4. m/ABC = mz1+mz2 5. 90° = m/1 + m22 6. 21 and 22 are complementary. Reasons Bank REASONS 1. 2. 3. 4. 5. 6. Angle Addition Postulate Transitive Property of Equality Definition of right angle V 2 Definition of complementary angles Definition of perpendicular lines

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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**Proof Explanation**

**Problem:**  
If two sides of two adjacent acute angles are perpendicular, then the angles are complementary.

**Given:**  
\(\overline{BA} \perp \overline{BC}\)

**To Prove:**  
\(\angle 1\) and \(\angle 2\) are complementary.

**Two-Column Proof**

| **Statements**                           | **Reasons**                                   |
|------------------------------------------|-----------------------------------------------|
| 1. \(\overline{BA} \perp \overline{BC}\) | 1. Given                                      |
| 2. \(\angle ABC\) is a right angle.      | 2. Definition of perpendicular lines          |
| 3. \(m\angle ABC = 90^\circ\)            | 3. Definition of right angle                  |
| 4. \(m\angle ABC = m\angle 1 + m\angle 2\)| 4. Angle Addition Postulate                   |
| 5. \(90^\circ = m\angle 1 + m\angle 2\)  | 5. Transitive Property of Equality            |
| 6. \(\angle 1\) and \(\angle 2\) are complementary. | 6. Definition of complementary angles  |

**Diagram Explanation:**

The diagram presents an angle \( \angle ABC \) with \(\overline{BA}\) forming a vertical line and \(\overline{BC}\) forming a horizontal line at point B, indicating that they are perpendicular. There are two angles, \(\angle 1\) and \(\angle 2\), which together make up \(\angle ABC\). 

**Reasons Bank:**

- Angle Addition Postulate
- Transitive Property of Equality
- Definition of right angle
- Definition of complementary angles
- Definition of perpendicular lines
- Given
Transcribed Image Text:**Proof Explanation** **Problem:** If two sides of two adjacent acute angles are perpendicular, then the angles are complementary. **Given:** \(\overline{BA} \perp \overline{BC}\) **To Prove:** \(\angle 1\) and \(\angle 2\) are complementary. **Two-Column Proof** | **Statements** | **Reasons** | |------------------------------------------|-----------------------------------------------| | 1. \(\overline{BA} \perp \overline{BC}\) | 1. Given | | 2. \(\angle ABC\) is a right angle. | 2. Definition of perpendicular lines | | 3. \(m\angle ABC = 90^\circ\) | 3. Definition of right angle | | 4. \(m\angle ABC = m\angle 1 + m\angle 2\)| 4. Angle Addition Postulate | | 5. \(90^\circ = m\angle 1 + m\angle 2\) | 5. Transitive Property of Equality | | 6. \(\angle 1\) and \(\angle 2\) are complementary. | 6. Definition of complementary angles | **Diagram Explanation:** The diagram presents an angle \( \angle ABC \) with \(\overline{BA}\) forming a vertical line and \(\overline{BC}\) forming a horizontal line at point B, indicating that they are perpendicular. There are two angles, \(\angle 1\) and \(\angle 2\), which together make up \(\angle ABC\). **Reasons Bank:** - Angle Addition Postulate - Transitive Property of Equality - Definition of right angle - Definition of complementary angles - Definition of perpendicular lines - Given
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