Background Tutorials

• Planes and Angles

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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!

• Triangle Definitions

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    What are Acute, Obtuse, and Right Triangles?

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

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    What is the Triangle Sum Theorem?

    When you're dealing with triangles, the Triangle Sum theorem can be very useful in finding interior angle measurements. In this tutorial, learn how to find this helpful theorem!

• Right Triangles and the Pythagorean Theorem

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    What are the Legs and Hypotenuse of a Right Triangle?

    Looking for some terminology used with right triangles? Then this tutorial was made for you! In this tutorial, you'll be introduced to the names for the different parts of a right triangle. Check it out!

• Finding Missing Angles

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    What is the Sine Ratio?

    The sine ratio is a handy ratio when you're dealing with right triangles! In this tutorial, you'll learn what the sine ratio is and how to use it to find angle measurements in a right triangle.

• Evaluating Expressions

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    What is the Substitution Property of Equality?

    If you ever plug a value in for a variable into an expression or equation, you're using the Substitution Property of Equality. This property allows you to substitute quantities for each other into an expression as long as those quantities are equal. Watch this tutorial to learn about this useful property!

• Translations

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    How Do You Graph a Translation of a Function?

    A great way to better understand how to translate a function is to practice! This tutorial takes you through the steps of graphing a function that's been translated up and to the right.

• Solving for a Variable

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    How Do You Solve for a Variable in Terms of Another Variable?

    Got an equation with two variables? Want to solve for one variable in terms of the other? Want to go the other way around? See how in this tutorial!

• Graphing Sine and Cosine Functions

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    What Does the Graph of the Sine Function Look Like?