Calculate the slope of each side

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
Problem 1CT
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Question
  1.  Calculate the slope of each side:
**Understanding Parallelograms on a Coordinate Plane**

This image presents a geometrical figure, specifically a parallelogram, plotted on a coordinate plane. The parallelogram is defined by four vertices labeled A, B, C, and D, connected by straight lines.

**Vertices Coordinates:**
- Point A is located at (-4, 3).
- Point B is at (1, 6).
- Point C is at (6, 4).
- Point D is at (1, 1).

**Axes Information:**
- The x-axis and y-axis are denoted, with intervals marked from -7 to 9 on the x-axis and -4 to 11 on the y-axis.

**Graph Details:**
- The plane uses a grid pattern to facilitate visualization and measurement.
- Each unit on both axes is represented by increments of 1.

**Parallelogram Properties:**
- Opposite sides of the parallelogram are parallel and equal in length.
- This figure illustrates the concept of translation and vector addition in coordinate geometry. The parallelogram shows how vectors can represent the sides and diagonals.

**Area Calculation:**
The area of a parallelogram on the coordinate plane can be calculated using the determinant of a matrix composed of the vertices' coordinates. The area is found using the following formula given vertices \((x_1,y_1), (x_2,y_2), (x_3,y_3), (x_4,y_4)\):
\[
Area = \frac{1}{2} \left| x_1y_2 + x_2y_3 + x_3y_4 + x_4y_1 - y_1x_2 - y_2x_3 - y_3x_4 - y_4x_1 \right|
In our case :
\left| x_1y_2 + x_2y_3 + x_3y_4 + x_4y_1 - y_1x_2 - y_2x_3 - y_3x_4 - y_4x_1 \right|
= \left| -4*6 + 1*4 + 6*1 + 1*3 - (3*1 + 6*6 + 4*1 + 1*-4)  \right|
= \left| -24 +
Transcribed Image Text:**Understanding Parallelograms on a Coordinate Plane** This image presents a geometrical figure, specifically a parallelogram, plotted on a coordinate plane. The parallelogram is defined by four vertices labeled A, B, C, and D, connected by straight lines. **Vertices Coordinates:** - Point A is located at (-4, 3). - Point B is at (1, 6). - Point C is at (6, 4). - Point D is at (1, 1). **Axes Information:** - The x-axis and y-axis are denoted, with intervals marked from -7 to 9 on the x-axis and -4 to 11 on the y-axis. **Graph Details:** - The plane uses a grid pattern to facilitate visualization and measurement. - Each unit on both axes is represented by increments of 1. **Parallelogram Properties:** - Opposite sides of the parallelogram are parallel and equal in length. - This figure illustrates the concept of translation and vector addition in coordinate geometry. The parallelogram shows how vectors can represent the sides and diagonals. **Area Calculation:** The area of a parallelogram on the coordinate plane can be calculated using the determinant of a matrix composed of the vertices' coordinates. The area is found using the following formula given vertices \((x_1,y_1), (x_2,y_2), (x_3,y_3), (x_4,y_4)\): \[ Area = \frac{1}{2} \left| x_1y_2 + x_2y_3 + x_3y_4 + x_4y_1 - y_1x_2 - y_2x_3 - y_3x_4 - y_4x_1 \right| In our case : \left| x_1y_2 + x_2y_3 + x_3y_4 + x_4y_1 - y_1x_2 - y_2x_3 - y_3x_4 - y_4x_1 \right| = \left| -4*6 + 1*4 + 6*1 + 1*3 - (3*1 + 6*6 + 4*1 + 1*-4) \right| = \left| -24 +
### Exercise: Slope Calculation and Polygon Classification

#### Question B: Calculate the slope of each side:

| \( m_{AB} \) | \( m_{AD} \) |
|--------------|--------------|
|              |              |

| \( m_{DC} \) | \( m_{BC} \) |
|--------------|--------------|
|              |              |

#### 2. Classify the polygon with the most specific classification you can justify.
________________________

#### 3. Find the perimeter of your figure to the nearest tenth.
________________________

### Instructions for Students:

1. **Calculate the Slope of Each Side:**
   - Use the slope formula \( m = \frac{y_2 - y_1}{x_2 - x_1} \) to find the slopes of sides \( AB \), \( AD \), \( DC \), and \( BC \).
   - Record your slope calculations in the provided table.

2. **Classify the Polygon:**
   - Analyze the slopes calculated above and determine the most specific classification of the polygon (e.g., rectangle, square, trapezoid).
   - Provide a written justification for your classification in the space provided.

3. **Find the Perimeter:**
   - Measure or calculate the lengths of each side using the distance formula if the coordinates of the vertices are given.
   - Sum the lengths of all sides to find the perimeter.
   - Round your final answer to the nearest tenth.

### Tips:
- Ensure your calculations for slope are accurate to confirm the correct classification of the polygon.
- Review geometric properties of polygons to aid in correct classification.
- Double-check your arithmetic when calculating the perimeter to ensure precision.
Transcribed Image Text:### Exercise: Slope Calculation and Polygon Classification #### Question B: Calculate the slope of each side: | \( m_{AB} \) | \( m_{AD} \) | |--------------|--------------| | | | | \( m_{DC} \) | \( m_{BC} \) | |--------------|--------------| | | | #### 2. Classify the polygon with the most specific classification you can justify. ________________________ #### 3. Find the perimeter of your figure to the nearest tenth. ________________________ ### Instructions for Students: 1. **Calculate the Slope of Each Side:** - Use the slope formula \( m = \frac{y_2 - y_1}{x_2 - x_1} \) to find the slopes of sides \( AB \), \( AD \), \( DC \), and \( BC \). - Record your slope calculations in the provided table. 2. **Classify the Polygon:** - Analyze the slopes calculated above and determine the most specific classification of the polygon (e.g., rectangle, square, trapezoid). - Provide a written justification for your classification in the space provided. 3. **Find the Perimeter:** - Measure or calculate the lengths of each side using the distance formula if the coordinates of the vertices are given. - Sum the lengths of all sides to find the perimeter. - Round your final answer to the nearest tenth. ### Tips: - Ensure your calculations for slope are accurate to confirm the correct classification of the polygon. - Review geometric properties of polygons to aid in correct classification. - Double-check your arithmetic when calculating the perimeter to ensure precision.
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