Question

Как находить перпендикуляры,я вообще не понимаю, объясните пожалуйста!!! (((

Answer 1

1)Проводишь прямую.
2)Ставишь точку не лежащую на этой прямой. 
3)Соединяешь точку и прямую под прямым углом.

Answer 2

Understanding Perpendicular Lines

Perpendicular lines are a fundamental concept in geometry. Two lines are said to be perpendicular if they intersect at a right angle, which is 90 degrees. In other words, the slopes of perpendicular lines are negative reciprocals of each other.

To find perpendicular lines, you need to consider the slopes of the lines. The slope of a line can be calculated using the formula:

slope = (change in y-coordinates) / (change in x-coordinates)

If two lines have slopes that are negative reciprocals of each other, they are perpendicular.

Let's go through an example to illustrate this concept.

Example:

Suppose we have a line with the equation y = 2x + 3. We want to find a line that is perpendicular to this line.

To find the perpendicular line, we need to determine its slope. The given line has a slope of 2. The negative reciprocal of 2 is -1/2. Therefore, the perpendicular line will have a slope of -1/2.

Now, we can use the slope-intercept form of a line (y = mx + b) to find the equation of the perpendicular line. We'll use the point-slope form of a line (y - y1 = m(x - x1)), where (x1, y1) is a point on the line.

Let's choose a point on the original line, such as (0, 3). Plugging in the values into the point-slope form, we get:

y - 3 = (-1/2)(x - 0)

Simplifying the equation, we get:

y - 3 = (-1/2)x

To convert this equation to slope-intercept form, we isolate y:

y = (-1/2)x + 3

Therefore, the equation of the perpendicular line is y = (-1/2)x + 3.

Conclusion:

To find perpendicular lines, you need to determine the slope of the given line and then find the negative reciprocal of that slope. You can use the slope-intercept form of a line to find the equation of the perpendicular line. Remember that perpendicular lines intersect at a right angle, and their slopes are negative reciprocals of each other.

I hope this explanation helps! Let me know if you have any further questions.