Respuesta :

Answer: Triangle A is ACUTE, Triangle B is OBTUSE, Triangle C is RIGHT, Triangle D is ACUTE.

Step-by-step explanation:

- Acute triangles are less than 90 degrees

- Obtuse triangles are greater than 90 degrees

- Right triangles are equal to 90 degrees

I really hoped this helped, have an amazing day/night!

Acute, Optus, right, Optus
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