Lines and Angles

Popular Tutorials in Lines and Angles

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  How Do You Use Supplementary Angles to Find a Missing Angle?

  If angles combine to form a straight angle, then those angles are called supplementary. In this tutorial, you'll see how to use your knowledge of supplementary angles to set up an equation and solve for a missing angle measurement. Take a look!

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  How Do You Find Missing Angles in a Transversal Diagram?

  Got a diagram of a transversal intersecting parallel lines? Trying to figure out all the angle measurements? Take a look at this tutorial, and you'll see how find all the missing angle measurements by identifying vertical, corresponding, adjacent, and alternate exterior angles!

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  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!

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  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.

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  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!

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  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!

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  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!

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  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!

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  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!

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  What are Parallel Lines?

  Lines that are parallel have a very special quality. Without this quality, these lines are not parallel. In this tutorial, take a look at parallel lines and see how they are different from any other kind of lines!

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  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!

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  What is a Transversal?

  Ever heard of a transversal? It's not as confusing as the term sounds. This tutorial will introduce you to transversals and show you the neat things that happen when a transversal meets two parallel lines. Take a look!