Question

Joe uses the following steps to construct a perpendicular line through a point C on a line segment.

Step 1: From point C, draw an arc intersecting the line segment in points A and B.
Step 2: Use a straightedge to draw an arc from point A, one above and the other below the line.
Step 3: Without changing the compass width, draw two arcs from point B, above and below the line segment.
Step 4: Label the point of intersection of the arcs above the line segment as Q and below the line as R.
Step 5: Using a straightedge, join points Q and R.

Answer 1

Part A: Which is the first incorrect step?
Part B: Using complete sentences, explain your answer for Part A.
Part C: Explain why a compass works for the construction done by Joe.

Answer 2

@jim_thompson5910 this is the question i need help with

Answer 3

were you able to get anywhere? or get started?

Answer 4

i started about five minutes ago but during the video to say how to do it i didnt finish getting done but i think part a is step 2. and for part b i think it is step 2 because a person should not use a straitedge to draw arcs they should use the compass tool to get the right measurements and make correct arcs that a straitedge can not make. ( when i submit it i will extend more o part b ) and for part c i would submit the compass works because there are a lot of arcs involved in this creation. so a compass will be the most suitable tool to use to make those arcs. (i will also extend on c) @jim_thompson5910 i asked for your help not exactly for help but as a guide to see if i am right

Answer 5

@jim_thompson5910 AM I RIGHT

Answer 6

"part a is step 2" that is correct because you can't use a straight edge to make an arc

you would use a compass (which you're also correct in saying)

Answer 7

and yes, whenever you need to draw an arc, you would use a compass

because there are a lot of arcs drawn, you would heavily rely on the compass here

Answer 8

you only use a straightedge once and that's at the very last step

Answer 9

thank you for helping me out

Answer 10

you're welcome

Answer 11

@jim_thompson5910 im sorry to bug you but i have a problem that i am stuck on and have no clue of what to do

Answer 12

@jim_thompson5910 can you help me

Answer 13

what's that?

Answer 14

Prove the Pythagorean Theorem using similar triangles. The Pythagorean Theorem states that in a right triangle, the sum of the squares of the lengths of the legs of the triangle equals the squared length of the hypotenuse. Be sure to create and name the appropriate geometric figures. This figure does not need to be submitted.

Answer 15

that is my question

Answer 16

ok one sec

Answer 17

did you come across this page at all?

http://www.math.nmsu.edu/~breakingaway/Lessons/PTUST/PTUST.html

Answer 18

no thanks