Is the triangle with the given side lengths a right triangle? EXPLAIN how you know.
3.9 mm, 8.0 mm, 8.9 mm
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Answer:
It is a right triangle
Step-by-step explanation:
Use the Pythagorean theorem:
[tex]a^2+b^2=c^2\\\\3.9^2+8.0^2=8.9^2\\\\15.21+64=79.21\\\\79.21=79.21[/tex]
if they weren't equal, it wouldn't be a right triangle.