We know from Pythagoras' Theorem, a right angle triangle can be identified by the relationship:

Thus, we know if the side lengths of the triangle in question abide by this relation, the triangle is right.
First, we must find the greatest side length.
We know, using the distance formula.



From this, we know that:

Therefore, GB would be the hypotenuse of the triangle.
Now we substitute the values for the two shorter lengths and the greater length into the pythagorean theorem:



Therefore, this triangle is a right angled triangle
Answer:
20. Which of the following is the correct first step to solve 5x2 – 20x = -15 by completing the square?
O Divide all terms by 5. this is the answer
O Divide all terms by -5.
Add 15 to both sides.
Add 100 to both sides.
5%
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
There are three green parts and twelve total colored parts.
3/12= 1/4
All triangles have angles that add up to 180, so we can take the top triangle, which has angles 14, 45, and x, and say they add up to 180, so 180-14-45=x and x = 121. For E, all angles that look like that and have opposite angles, then these opposites are equal, so both sides of E are 121. then we use the bottom triangle to solve for D with the fact that all triangles' angles add to 180 again. 180-27-121 = D, so D=32
<span>Which angle do you want?</span>