Will give brainliest for best solve #17 and #18. if you can only answer one it's ok.

Which statement is true 1.the pythagorean theorem can be used to find the missing side of any triangle 2.the pythagorean theorem can be used to find the missing side of any polygon 3. the pythagorean theorem can be used to find the missing side of any right triangle 4.the pythagorean theorem can be used to find the missing side of any isosceles triangle

Which of these triangle pairs can be mapped to each other using two reflections?

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12