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8 questions with a Mountains theme plus a full answer key. Perfect for Grade 4 Math.
⬇ Download WorksheetStudents will identify, measure, and calculate angles including right, acute, obtuse, and straight angles in real-world mountain contexts.
Before Q6, ask students to find the two angles Maya measures at the summit marker (125° and 35°) and verify they sum to 160°. This grounds the addition check in the story.
- Maya finds a special object — a carved trail marker. The marker points at a 40° angle from the ground. Is 40° an acute angle? Circle: TRUE or FALSE.
- Maya spots a unique item: a glowing crystal wedged in the cliff. The crystal makes a right angle. How many degrees is a right angle?
- Maya discovers a rare find — an ancient snow compass. Two needle arms form an angle. One arm points at 0°. The other arm points at 115°. What type of angle is 115°? Write the name and explain why.
...plus 5 more questions in the full worksheet
Instructions: Read each mountain scene carefully. Show all your working to find every angle.
Standard: 4.MD.C.5, 4.MD.C.6, 4.MD.C.7
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About this Math worksheet for Grade 4
Fourth graders need to measure and classify angles to build foundational geometry understanding required for later work with polygons and shapes, making this practice essential for meeting 4.MD.C.5-C.7 standards. Use this worksheet to have students apply protractors to identify acute, right, and obtuse angles in varied contexts, allowing you to diagnose whether they can accurately measure to the nearest degree and understand angle relationships before moving to more complex geometric reasoning.
This printable Math worksheet is designed for Grade 4 students and covers Angles. The Mountains theme keeps kids engaged while they practice essential Math skills. Every worksheet includes a full answer key making it easy for parents and teachers to check work instantly. Aligned to Common Core State Standards (CCSS) for Grade 4 Math. Print-ready at US Letter size. No login required — download and print in seconds.
Last updated: April 2026
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