Denise calculated the missing side length of one of these triangles using the Pythagorean Theorem. Which triangle is it

The one with a right angle.

is the answer d? or is it the guys name?

So the correct answer should be the triangle with the right angle. For me it was answer choice D but for you it may be different hope this helps!

To determine which triangle Denise used the Pythagorean Theorem to calculate the missing side length, we need more information. The Pythagorean Theorem is a formula that relates the lengths of the sides of a right triangle. It states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

The formula can be written as: a^2 + b^2 = c^2, where 'a' and 'b' represent the lengths of the two shorter sides (known as the legs) of the right triangle, and 'c' represents the length of the hypotenuse.

Given that Denise used the Pythagorean Theorem to calculate the missing side length, we need to determine which triangle satisfies the conditions necessary for the theorem to be applicable. Specifically, we need to identify a right triangle that has two known side lengths, and Denise used the theorem to find the length of the missing side.

If you provide more information about the triangles, such as the lengths of the known sides or any other relevant details, I can help you determine which triangle Denise used the Pythagorean Theorem to solve for the missing side length.