1. Find m 1. 89.2 48.5

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
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## Problem 1: Find \( m \ 1 \).

### Description:
The image contains a triangle within a rectangle. Two angles of the triangle are labeled as \( 89.2^\circ \) and \( 48.5^\circ \). The third angle is labeled as \( m \ 1 \).

### Diagram Explanation:
- **Triangle**: A three-sided polygon with one angle measuring \( 89.2^\circ \), another measuring \( 48.5^\circ \), and the third angle to be calculated.
- **Rectangle**: The rectangular boundary around the triangle appears to simply frame it, with no additional relevant information given.

### Educational Objective:
Calculate the measure of angle \( m \ 1 \) in the triangle using the properties of interior angles in a triangle. The sum of interior angles in a triangle is always \( 180^\circ \).

### Solution Approach:
To find \( m \ 1 \):
1. Use the formula for the sum of angles in a triangle:
   \[
   m \ 1 = 180^\circ - (89.2^\circ + 48.5^\circ)
   \]
2. Perform the calculation to find \( m \ 1 \).

This exercise helps reinforce the understanding of basic geometric principles and the calculation of unknown angles in triangles.
Transcribed Image Text:## Problem 1: Find \( m \ 1 \). ### Description: The image contains a triangle within a rectangle. Two angles of the triangle are labeled as \( 89.2^\circ \) and \( 48.5^\circ \). The third angle is labeled as \( m \ 1 \). ### Diagram Explanation: - **Triangle**: A three-sided polygon with one angle measuring \( 89.2^\circ \), another measuring \( 48.5^\circ \), and the third angle to be calculated. - **Rectangle**: The rectangular boundary around the triangle appears to simply frame it, with no additional relevant information given. ### Educational Objective: Calculate the measure of angle \( m \ 1 \) in the triangle using the properties of interior angles in a triangle. The sum of interior angles in a triangle is always \( 180^\circ \). ### Solution Approach: To find \( m \ 1 \): 1. Use the formula for the sum of angles in a triangle: \[ m \ 1 = 180^\circ - (89.2^\circ + 48.5^\circ) \] 2. Perform the calculation to find \( m \ 1 \). This exercise helps reinforce the understanding of basic geometric principles and the calculation of unknown angles in triangles.
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