Respuesta :

Answer:

11 is a right triangle

13 is obtuse

mhanifa

Answer:

  • Both are right triangles

Step-by-step explanation:

Use Pythagorean to decide

#11

Sides 12, 16, 20

  • 12² + 16² = 20²
  • 400 = 400
  • Right triangle

#13

Sides 2.4, 4.5, 5.1

  • 2.4² + 4.5² = 5.1²
  • 26.01 = 26.01
  • Right triangle

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