# 55 Unit 1 Geometry Basics Homework 2 Answer Key Pdf

## Unit 1 Geometry Basics Homework 2 Answer Key PDF

### Introduction

Geometry is a fascinating branch of mathematics that deals with the study of shapes, sizes, and properties of figures and spaces. Unit 1 of the geometry course focuses on the basics, providing students with a solid foundation to build upon. As part of their homework, students are often assigned various exercises and problems to solve. In this article, we will provide an answer key in PDF format for Unit 1 Geometry Basics Homework 2.

### Understanding Geometry Basics

Geometry basics encompass a wide range of fundamental concepts and principles. Before we delve into the details of the homework questions, let's review some key terms and ideas that will help you better understand the subject:

### Points, Lines, and Planes

- Points: In geometry, a point is a specific location in space. It is represented by a dot and has no size or dimension.

- Lines: A line is a straight path that extends infinitely in both directions. It is made up of an infinite number of points.

- Planes: A plane is a flat surface that extends infinitely in all directions. It is made up of an infinite number of lines.

### Angles and Measurements

- Angles: An angle is formed by two rays that share a common endpoint. It is usually measured in degrees.

- Degree: Degree is a unit of measurement for angles. A full circle is divided into 360 degrees.

- Right Angle: A right angle measures exactly 90 degrees, forming a perfect L-shape.

- Acute Angle: An acute angle measures less than 90 degrees.

- Obtuse Angle: An obtuse angle measures more than 90 degrees but less than 180 degrees.

### Triangles and Quadrilaterals

- Triangles: A triangle is a polygon with three sides and three angles.

- Types of Triangles: There are various types of triangles, including equilateral, isosceles, and scalene triangles.

- Quadrilaterals: A quadrilateral is a polygon with four sides and four angles.

- Types of Quadrilaterals: Quadrilaterals can be classified into different types like squares, rectangles, parallelograms, and trapezoids.

### Homework 2 Questions and Answer Key

Now that we have refreshed our memory on some essential geometry basics, let's take a look at the questions from Homework 2 and their corresponding answers:

### Question 1

Question: Identify the type of angle shown in the figure below:

Answer: The angle shown is a right angle, measuring 90 degrees.

### Question 2

Question: Calculate the measure of angle A in the figure below:

Answer: To calculate angle A, we need to use the fact that the sum of angles in a triangle is 180 degrees. Given that angle B measures 60 degrees and angle C measures 40 degrees, we can subtract their sum from 180 to find angle A. Therefore, angle A is 80 degrees.

### Question 3

Question: Determine the type of triangle based on the given side lengths: 5 cm, 5 cm, 5 cm.

Answer: The triangle with side lengths 5 cm, 5 cm, and 5 cm is an equilateral triangle. In an equilateral triangle, all sides are equal.

### Question 4

Question: Identify the type of quadrilateral shown in the figure below:

Answer: The quadrilateral shown is a rectangle. Rectangles have four right angles.

### Question 5

Question: Calculate the perimeter of the following figure:

Answer: To calculate the perimeter, we need to add up the lengths of all the sides. For the given figure, the perimeter is 10 cm + 8 cm + 10 cm + 8 cm, which equals 36 cm.

### Conclusion

Unit 1 Geometry Basics Homework 2 covers essential concepts such as points, lines, angles, triangles, and quadrilaterals. By reviewing the answer key provided in this article, you can better understand the solutions to the homework questions and strengthen your knowledge of geometry fundamentals. Remember to practice regularly and seek help when needed to further enhance your understanding of this captivating field of mathematics.