Adjacent Angles Challenge
Apply angle relationships to multi-step problems and extend reasoning.
Download PDFAdjacent Angles Worksheets for Grade 5
Help students understand adjacent angles with free printable practice. This collection covers angle identification, common vertices and sides, addition, subtraction, straight-line angles, mixed review, and multi-step challenges.
Download the Worksheets ↓At a glance
These Grade 5 worksheets build skills step by step—from recognizing adjacent angles to finding missing angle measures and solving challenge problems.
Included topics: rules and examples, adjacent or not adjacent, identifying angle pairs, addition, subtraction, straight-line angles, mixed practice, and challenge questions.
What are adjacent angles?
Adjacent angles are next to each other. They share a common vertex and one common side, and their interiors do not overlap.
Remember: Adjacent angles share the same vertex and one side, and they do not overlap.
Example: Adding adjacent angles
35° + 25° = 60°
If two adjacent angles measure 35° and 25°, their combined angle measures 60°.
Example: Finding a missing angle
120° − 45° = 75°
If a whole angle measures 120° and one part measures 45°, the other part measures 75°.
Adjacent angles on a straight line
Angles that form a straight line add to 180°. If one angle measures 65°, the adjacent angle is:
180° − 65° = 115°
Students can use this relationship to find unknown angles without formal algebra.
How to use these worksheets
Begin with rules and examples, then move to identifying angle pairs. Practise addition and subtraction before introducing straight-line angles and mixed problems. Use the challenge sheet for extension or review.
Free Grade 5 adjacent angles worksheets
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Adjacent Angles Mixed Practice
Review adjacent-angle identification and calculations.
Download PDFAdjacent Angles on a Straight Line
Use the 180° relationship to find missing angle measures.
Download PDFAdjacent Angles: Rules & Examples
Learn the definition, review examples, and practise the basic rules.
Download PDFAdjacent or Not Adjacent?
Decide whether angle pairs meet the definition of adjacent angles.
Download PDFFind the Missing Angle: Subtraction
Subtract a known part from the whole angle.
Download PDFFind the Whole Angle: Addition
Add adjacent angle measures to calculate the whole angle.
Download PDFIdentify Adjacent Angle Pairs
Identify the common vertex and common side for each angle pair.
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Frequently asked questions
What makes two angles adjacent?
They share a common vertex and one common side, and their interiors do not overlap.
Do adjacent angles always add up to 180°?
No. They add to 180° when they form a straight line. Other adjacent angles can have different combined measures.
How do students find a missing adjacent angle?
When the whole angle and one part are known, subtract the known angle from the whole angle. For angles on a straight line, the total is 180°.
Are these worksheets suitable for Grade 5?
The collection is designed for Grade 5 practice and review. Teachers can choose worksheets according to students’ readiness and current learning goals.
Ready to practise adjacent angles?
Choose a worksheet, solve each problem carefully, and review the angle relationships as you work.
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