Question
I know two lines are perpendicular when
Answers
GPT-4o mini
Two lines are perpendicular when the product of their slopes is -1. In other words, if one line has a slope \( m_1 \) and the other line has a slope \( m_2 \), they are perpendicular if:
\[
m_1 \times m_2 = -1
\]
Alternatively, in a coordinate plane, if one line is vertical (undefined slope) and the other line is horizontal (slope of 0), they are also considered perpendicular. In terms of angle, two lines are perpendicular if they intersect at a right angle (90 degrees).
\[
m_1 \times m_2 = -1
\]
Alternatively, in a coordinate plane, if one line is vertical (undefined slope) and the other line is horizontal (slope of 0), they are also considered perpendicular. In terms of angle, two lines are perpendicular if they intersect at a right angle (90 degrees).