To classify the triangles by their angles (acute, right, obtuse), we need to analyze each triangle based on the following definitions:
-
Acute Triangle: All three angles are less than 90°.
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Right Triangle: One angle is exactly 90°.
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Obtuse Triangle: One angle is greater than 90°.
Let's classify each triangle step by step:
---
1.
-
Triangle Description: All angles appear to be less than 90°.
-
Classification: Acute
---
2.
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Triangle Description: One angle appears to be exactly 90°.
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Classification: Right
---
3.
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Triangle Description: All angles appear to be less than 90°.
-
Classification: Acute
---
4.
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Triangle Description: One angle appears to be greater than 90°.
-
Classification: Obtuse
---
5.
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Triangle Description: All angles appear to be less than 90°.
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Classification: Acute
---
6.
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Triangle Description: One angle appears to be greater than 90°.
-
Classification: Obtuse
---
7.
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Triangle Description: One angle appears to be greater than 90°.
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Classification: Obtuse
---
8.
-
Triangle Description: One angle appears to be exactly 90°.
-
Classification: Right
---
Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & \text{Acute} \\
2. & \text{Right} \\
3. & \text{Acute} \\
4. & \text{Obtuse} \\
5. & \text{Acute} \\
6. & \text{Obtuse} \\
7. & \text{Obtuse} \\
8. & \text{Right} \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of worksheet on triangles.
