
Classify triangles
Free printable Grade 8 math worksheet for "Classify triangles" — practice two-dimensional figures. No-prep, print or assign online.
This worksheet provides challenging exercises for students to classify triangles by their sides and angles, reinforcing concepts in two-dimensional figures. Teachers can use it to assess students' understanding of triangle properties and promote critical thinking in geometry. Ideal for Grade 8 math classes focusing on classification of triangles and geometric reasoning.
Learning objectives
- Identify triangles based on side lengths and angle measures
- Classify triangles as equilateral, isosceles, or scalene
- Differentiate between acute, right, and obtuse triangles
Answer Key

How to use this worksheet
- Click “Download Worksheet” to get the PDF — free with a KiwiBee account (up to 50 downloads a month).
- Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Classify triangles” worksheet free?
Yes. “Classify triangles” is a free printable Math worksheet. Sign in with a free KiwiBee account to download the PDF — it includes up to 50 downloads a month.
What grade or age is this Math worksheet for?
It's designed for Middle School (ages 11–14), covering Two-dimensional figures.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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