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Answer:1-2 acute 4 is obtuse idk about 3. I think 3 would be like an = triangle but I don’t know the right terminology

Step-by-step explanation:

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1 and 2 are right triangles and 3 and 4 are isosceles triangles. Right triangles are triangles that have a right angle. Isosceles triangles have two congruent sides. Scalene triangles have sides that are not the same to each other. And equilateral triangles are triangles that have sides that all equal each other.

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