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zalisa [80]
3 years ago
13

Ella’s geometry teacher asked each student to devise a problem and write out its solution. Here is Ella’s work:

Mathematics
2 answers:
Zigmanuir [339]3 years ago
5 0

Answer:

  Ella’s procedure and conclusion are incorrect.

Step-by-step explanation:

The sum of the squares of the short sides can be compared to the square of the long side to see if the triangle is acute, right, or obtuse. The appropriate conclusions are ...

  • a² +b² > c² -- acute triangle
  • a² +b² = c² -- right triangle
  • a² +b² < c² -- obtuse triangle

For Ella's side lengths, the appropriate "work" is ...

  10² +11² ?? 15²

  100 +121 < 225

The triangle is obtuse.

__

Ella used an incorrect comparison and came to the wrong conclusion. Both her procedure and conclusion are incorrect.

mixer [17]3 years ago
5 0

Answer:

D.

Step-by-step explanation:

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