# Fundamentals of Geometry

### Popular Tutorials in Fundamentals of Geometry

#### How Do You Find the Midpoint Between Two Coordinates?

The midpoint of a line segment is the point midway between the endpoints of the line segment. This tutorial shows you how to take two endpoints and figure out the midpoint of the line segment. Check it out!

#### How Do You Find the Midpoint of Two Points on a Map If You Have the Coordinates?

When you're looking at a map, you can find the point midway between two locations by calculating the midpoint. This tutorial takes you through the process of finding the point midway between two cities.

#### What's the Midpoint Formula?

Want to find the point midway between two locations? Then you're looking for the midpoint! The midpoint of a line segment is the point located midway between the endpoints of the line segment. This tutorial tells you about the midpoint of a line segment. Take a look!

#### What's the Midpoint of Two Points on a Number Line?

If you have two points on a number line, the midpoint is the point that is located directly midway between the two points. Take a look at this tutorial and learn about the midpoint of two points on a number line!

#### What are the Endpoints of a Line Segment?

A math term can really tell you a lot about the thing it's describing. Take the term 'endpoints'. The endpoints of a line segment are just the 'points' located at the 'ends' of the line segment! That's an informative name! Watch this tutorial to learn about endpoints of a line segment.

#### How Do You Find the Distance Between Two Points?

Trying to find the distance between two points? Use the distance formula! Want to see how it's done? Check out this tutorial!

#### What Is the Distance Formula?

If you need to find the distance between to points on the coordinate, you'll probably use the distance formula to get your answer. This tutorial introduces you to the distance formula and even shows you how to find it!

#### How Was the Distance Formula Derived?

Trying to find the distance between two points on the coordinate plane? Use the distance formula! Can't remember it? Not a problem if you've watched this tutorial! This tutorial shows you how to derive the distance formula. You even use the Pythagorean theorem to find it! Take a look!

#### What's the Formula for the Perimeter of a Rectangle?

What is the formula for the perimeter of a rectangle? This tutorial shows you how to find that formula!

#### How Do You Find the Perimeter of a Shape?

Ever had someone come up to you on the street, hand you a shape, and ask you to find the perimeter of that shape? Watch this tutorial, and next time that happens you'll be ready!

#### What are the Customary Units of Length?

An inch, a foot, and a mile are all customary units used to measure the length of an object. This tutorial introduces you to the customary units for length.

#### What are the Metric Units of Length?

If you're measuring the length of an object, you can use one of the metric units used to measure length. Follow along with this tutorial to learn about these metric units for length.

#### What is a Degree?

Circles can't run a temperature, but they are an important part of degrees! Watch this tutorial to learn what a degree is and how it relates to a circle.

#### How Do You Find the Perimeter of a Rectangle?

Finding the perimeter of a rectangle is as easy as adding up all its side lengths! This tutorial takes you through the steps needed to find the perimeter of a rectangle.

#### What is Area?

Area is the amount of space a figure takes up! This tutorial introduces area and explains how we find the area of a figure.

#### How Do You Find Angle Measures Using the Angle Addition Postulate?

Learning how to find missing angle measurements is a very useful skill. In this tutorial, get some practice finding missing angle measurements by first creating an equation. Take a look!

#### What is a Point?

A point is a fundamental building block of math. Without points, you couldn't make lines, planes, angles, or polygons. That also means that graphing would be impossible. Needless to say, learning about points is very important! That makes this tutorial a must see!

#### What is a Plane?

You can't learn everything about math without seeing planes. Did you know that there are rules for naming a plane? This tutorial introduces you to planes and shows you how to name them. Take a look!

#### What is a Line Segment?

A math term can really tell you a lot about the thing it's describing. Take the term line segment. A line segment is just part of a line! In this tutorial, learn about line segments, how to name them, and what the midpoint of a line segment is!

#### What is a Ray?

Rays are a very useful part of math. Two rays can create an angle. Multiple angles can create a polygon. Add another dimension, and you get three-dimensional solids! This tutorial introduces you to rays and shows you how to name them.

#### What is an Angle?

Angles are a fundamental building block for creating all sorts of shapes! In this tutorial, learn about how an angle is formed, how to name an angle, and how an angle is measured. Take a look!

#### What are Acute, Obtuse, Right, and Straight Angles?

Did you know that there are different kinds of angles? Knowing how to identify these angles is an important part of solving many problems involving angles. Check out this tutorial and learn about the different kinds of angles!

#### What are Complementary Angles?

Do complementary angles always have something nice to say? Maybe. One thing complementary angles always do is add up to 90 degrees. In this tutorial, learn about complementary angles and see how to use this knowledge to solve a problem involving these special types of angles!

#### What are Supplementary Angles?

Knowing about supplementary angles can be very useful in solving for missing angle measurements. This tutorial introduces you to supplementary angles and shows you how to use them to solve for a missing angle measurement. Take a look!

#### What are Vertical Angles?

Vertical angles have a very special quality. They are always congruent to one another! Check out this tutorial to learn about and see how to identify vertical angles!

#### What Does Congruent Mean?

If two figures have the same size and shape, then they are congruent. The term congruent is often used to describe figures like this. In this tutorial, take a look at the term congruent!

#### What are Perpendicular Lines?

Perpendicular lines have a special property. The angles formed by perpendicular lines will always be the same. Check out this tutorial to learn about perpendicular lines and see a cool trick involving these special lines!

#### How Do You Find the Area of a Rectangle?

To find the area of a rectangle, multiply the length times the width! This tutorial will show you how to find the area of a rectangle. Check it out!

#### How Do You Find the Area of a Triangle?

Finding the area of a triangle? Know the length of the base and the height? Then just take those values and plug them into the formula for the area of a triangle and solve! This tutorial shows you how.

#### How Do You Find the Circumference of a Circle if You Know the Diameter?

Trying to find the circumference of a circle? Know the diameter? Then you can use the formula for the circumference of a circle to get the answer! Just plug the value for the diameter into the formula and solve. This tutorial shows you how!

#### How Do You Find the Circumference of a Circle if You Know the Radius?

Trying to find the circumference of a circle? Know the radius? Then you can use the formula for the circumference of a circle to get the answer! Just plug the value for the radius into the formula and solve. This tutorial shows you how!

#### How Do You Find the Area of a Circle if You Know the Radius?

If you know the radius of a circle, you can use it to find the area of that circle. Just plug that value into the formula for the area of a circle and solve. Watch this tutorial to see how it's done!

#### How Do You Find the Area of a Circle if You Know the Diameter?

If you have the diameter of a circle, you can use it to find the area of that circle. Just plug that value into the formula for the area of a circle and solve. Watch this tutorial to see how it's done!

#### What is the Formula for the Area of a Rectangle?

Trying to find the area of a rectangle? There's a formula that can help! Check out this tutorial to learn about the formula for the area of a rectangle.

#### What is the Formula for the Area of a Triangle?

Did you know that the formula for the area of a triangle can be found by using the formula for the area of a parallelogram? In this tutorial, you'll see how it's done! Take a look!

#### What is Circumference?

The circumference of a circle is the distance around that circle. But what is the formula to find the circumference? In this tutorial, you'll learn the formulas for the circumference of a circle. Take a look!

#### What is the Formula for the Area of a Circle?

Did you know that you can figure out the formula for the area of a circle by first turning the circle into a parallelogram? It seems a little weird, but it really works! Watch this tutorial to see how it's done!