Question

Use the polygon tool to draw a right triangle with hypotenuse CD.

Answer 1

he means x 5 y -1

Explanation:

Answer 2

Your third point should be above D at (5,-1) to form a right triangle.

Explanation:

Easiest way is draw a vertical line at point D and a horizontal line at point C, where they intersect will be (5,-1) which will form a right triangle.

Still need convincing? Let's solve it by the fact that if we're talking about right triangles, we can use Pythagorean theorem.

By Pythagorean theorem we have:

`c^2=a^2+b^2`

Where c is the hypotenuse (CD), and a and b are the shorter of the three legs of the triangle.

Therefore,

`c=√(a^2+b^2)=√((x_2-x_1)^2)+(y_2-y_1)^2) = √(9^2+(-5)^2)`

We don't need to evaluate what c is but it is
`√(106)`, what we need to focus on is the 9^2 and (-5)^2. The first number 9^2 tells us that from C we must move 9 units to the right or (-5)^2 means 5 units up from point D which will return the same answer (5,-1). So one of the legs is 5 units long, the other is 9 units long and the hypotenuse is
`√(106)` units long.