How to Find Adjacent Angles
Adjacent angles are two angles that share a common vertex and a common side but do not have any common interior points. This means they sit next to each other or are "adjacent."
A Step-by-step Guide to Finding Adjacent Angles
Here’s a simple guide on how to find adjacent angles:
Step 1: Identify the Vertex
First, identify the common vertex of the angles. The vertex is the point where the angles meet or where their sides intersect.
The Absolute Best Book for 4th Grade Students
Step 2: Find the Common Side
Next, look for the common side. Adjacent angles will always have one side (or ray) that is the same.
Step 3: No Common Interior Points
Finally, make sure that the angles do not have any common interior points. This means that they do not overlap each other.
For example, if you have a shape or diagram with multiple angles, the adjacent angle to ∠ABC might be ∠CBD. They share the vertex B and the side BC, but they do not share any interior points.
Keep in mind that two angles being adjacent doesn’t imply any specific relationship between their measures unless additional information is given. For instance, if the two adjacent angles form a straight line, they are supplementary, meaning their measures add up to 180 degrees. But if they form a right angle, they add up to 90 degrees.
The Best Math Books for Elementary Students
Related to This Article
More math articles
- How to Prepare for the HSPT Math Test?
- How to Solve Prime Factorization with Exponents?
- Direct, Inverse, Joint, and Combined Variation
- Top 10 Websites to Learn About Scholarships, Federal Aid, and Student Funding
- How to Balance the Scales: Inequalities with Addition and Subtraction of Mixed Numbers
- The Ultimate 4th Grade STAAR Math Course (+FREE Worksheets)
- Word Problems Involving Comparing Rates
- Top 10 7th Grade FSA Math Practice Questions
- How to Find Maxima and Minima of a Function?
- Best Calculators for Electrical Engineering Students In 2026


















What people say about "How to Find Adjacent Angles - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.