Question

If a triangle has an angle measuring 90° or more, then it is not an acute triangle.

Which of these is logically equivalent to it?

If a triangle does not have an angle measuring 90° or more, then it is an acute triangle.

If a triangle is an acute triangle, then it does not have an angle measuring 90° or more.

if a triangle is not an acute triangle, then it has an angle measuring 90° or more.


If a triangle does not have an angle measuring 90° or more, then it is not an acute triangle.

Answer 1

Logically equivalent to "A implies B" is "not B implies not A." Is that enough for you to find the right answer?

Answer 2

In this case A="a triangle has an angle measuring 90° or more" and B=" it is not an acute triangle"

Answer 3

not B=a triangle is acute
not A=triangle does not have an angle greater than or equal to 90 degrees.