Question

Help!?
What is the first step in constructing a perpendicular at a point on a line?

a. Place the compass on the end of the line.
b. Place the compass on the point.
c. Draw an arc from each end of the line.
d. Draw a straight line through the point.


Find the slope of a line perpendicular to the line containing the points C(–12, 11) and D(3, 9).

a. 15 over 2
b. –2 over 15
c. 2 over 15
d. –15 over 2
*Please explain

Answer 1

@DullJackel09 @arabpride @StudyGurl14 @mathmath333 @iGreen

Answer 2

c, for the first one

Answer 3

but technically, to do c, you have to do a...so yea, this is a stupid question

Answer 4

So, which one is it?

Answer 5

first, find the slope of the line going through the points by using the slope formula

Answer 6

(for the second one)

Answer 7

For #2 I got c.

Answer 8

@StudyGurl14

Answer 9

That is incorrect.

Answer 10

Okay. So how do I find the slopes? @StudyGurl14

Answer 11

Slope formula:
Where \[(x_1,y_1)\]and \[(x_2,y_2)\]are points on the same line...
\[slope=\frac{y_2-y_1}{x_2-x_1}\]

Answer 12

But remember, perpendicular lines have opposite reciprocal slopes

Answer 13

Okay. Before you go, can you help me with one more question?

Answer 14

Sure :)

Answer 15

An irregular quadrilateral has exterior angle measures of 93, 85, and 89. What is the measure of the fourth interior angle?
273
267
93
87
*What is a quadrilateral equal to?

Answer 16

@StudyGurl14

Answer 17

quadrilaterals interior angles add up to 360 degrees

Answer 18

So I got 87.. Am I correct? @StudyGurl14

Answer 19

Yep. great job!

Answer 20

Okay. Can you help me with other questions? I am so confused in Geometry. @StudyGurl14

Answer 21

post new question in new thread and link me :)