Question

HELP! Why Is this a right triangle? Explain. Thank you so much!

Answer 1

ABC is a right triangle

Explanation:

Perpendicular lines have 90 degree angles.

Perpendicular lines have slopes that are negative reciprocals, that means when you multiply them together they equal -1

Slope AB * slope BC = -1

2/5 * -5/2 = -1

-1 = -1

So AB is perpendicular to BD, which means it forms a 90 degree angle

That means ABC is a right triangle