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Identify the type of triangle—acute, right, or obtuse—based on the given images.

Worksheet titled "Triangles" with four triangles, each labeled with options: acute, right, obtuse. Students circle the correct type of triangle shown.

Worksheet titled "Triangles" with four triangles, each labeled with options: acute, right, obtuse. Students circle the correct type of triangle shown.

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Show Answer Key & Explanations Step-by-step solution for: Triangles | Worksheets | Triangle worksheet, Fun math worksheets ...
Let's solve this step by step. The task is to identify the correct type of triangle (acute, right, or obtuse) for each of the six triangles shown in the image.

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🔍 Definitions:


- Acute triangle: All three angles are less than 90°.
- Right triangle: One angle is exactly 90° (a right angle).
- Obtuse triangle: One angle is greater than 90°.

We'll go through each triangle one by one.

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🔹 Top Left Triangle (Red)


- It has a small square at one corner — this symbol indicates a right angle (90°).
- So, this is a right triangle.

Answer: Right

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🔹 Top Right Triangle (Green)


- All angles appear to be less than 90°.
- No right angle symbol, and no angle looks larger than 90°.
- This is an acute triangle.

Answer: Acute

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🔹 Middle Left Triangle (Pink)


- One angle looks wider than 90° (greater than a right angle).
- That means it's an obtuse triangle.

Answer: Obtuse

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🔹 Middle Right Triangle (Blue)


- This triangle appears very narrow, with one angle clearly greater than 90°.
- Again, this is an obtuse triangle.

Answer: Obtuse

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🔹 Bottom Left Triangle (Green with square)


- There’s a right angle symbol (square) at the corner.
- So, this is a right triangle.

Answer: Right

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🔹 Bottom Right Triangle (Blue)


- All angles look less than 90°.
- No right angle or wide angle.
- This is an acute triangle.

Answer: Acute

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Final Answers:



| Triangle | Type |
|--------|------------|
| Top Left | Right |
| Top Right | Acute |
| Middle Left | Obtuse |
| Middle Right | Obtuse |
| Bottom Left | Right |
| Bottom Right | Acute |

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📌 Summary:


You should circle:
- Right for top-left and bottom-left
- Acute for top-right and bottom-right
- Obtuse for middle-left and middle-right

This completes the task!
Parent Tip: Review the logic above to help your child master the concept of types of triangle worksheet.
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