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.