Math

Ken Nagrod said:
[dead horse] [dead horse] [dead horse]
Please respond in a timely fashion as we are on standby for just such carpentry emergencies.
Click to expand...

OK ok.. I'll take my tedious mental excercises processes and go back to my day job.  [scratch chin]
I think I over-exposed my math dork bits.  [embarassed]

Looking back I can see my post was perhaps too deep, and I apologize if it came across as condescending to anyone. 
But rather than just post a cryptic answer, hopefully some n00b doing a google search on how to do just this task might be successful for having a detailed walk through and seeing the process for deriving the two answers.

Anyway, I know Ken is giving me a ribbing.  [wink]
 
Your inaccuracy by category:
Parallelogram 2.2 2.8 3.2
Midpoint 3.6 5.1 2.2
Bisect angle 1.0 5.7 0.5
Triangle center 11.6 12.5 19.3
Circle center 5.7 5.8 10.2
Right angle 2.8 1.8 3.3
Convergence 15.5 3.2 6.7
Average error:  5.94  (lower is better)
Time taken:  97.0
 
Your inaccuracy by category:
Parallelogram 5.8 5.4 5.0
Midpoint 5.0 2.2 2.0
Bisect angle 3.6 1.1 0.9
Triangle center 3.9 1.7 1.7
Circle center 1.0 3.2 2.2
Right angle 3.9 3.8 1.7
Convergence 2.8 5.4 5.0
Average error:  3.20  (lower is better)
Time taken:  128.9
 
Deansocial said:
Your inaccuracy by category:
Parallelogram 5.8 5.4 5.0
Midpoint 5.0 2.2 2.0
Bisect angle 3.6 1.1 0.9
Triangle center 3.9 1.7 1.7
Circle center 1.0 3.2 2.2
Right angle 3.9 3.8 1.7
Convergence 2.8 5.4 5.0
Average error:   3.20   (lower is better)
Time taken:   128.9
Click to expand...

Cant help your self can u Dean!  Its trails bike and Doritos race all over again!  Oh I got further on trails last nite on transport I cant beat it its pretty hard!

JMB
 
I noticed something I find really funny with all the scores that are coming in.
Everyone (for the most part) sucks at the parallelogram...
 
Top Knot said:
I noticed something I find really funny with all the scores that are coming in.
Everyone (for the most part) sucks at the parallelogram...
Click to expand...

I think that can be due to the screen resolution! As the guy who created the website says that if your resolutions is set different to what the monitor is the aspect ratio would be different and so example if you have two lines which are actually square on the system he has created  they do not appear square on your screen because the ratio has either stretched or squashed the image which distorts it and so it will be a lot harder for people to guess the angles and stuff!  

JMB
 
jmbfestool said:
I think that can be due to the screen resolution!
Click to expand...

I tend to disagree... if your assumption was correct the same would apply to all the right angles too. All the right angles I have tried have all been in a random orientation, meaning, if your screen resolution settings were out then the same effect would apply to both right angles and parallelograms.
I actually think is a carpenters in ability to see and to accept things out of square or unbalanced  [cool] [big grin]
 
Back to mathematics, I'm currently studying for a trade test in the film union here. It's essentially a competency test in mathematics and layout and is mostly based on geometry skills, stair and rafter layout and is a timed test. While I wouldn't say I'm a super whiz when it comes to this stuff I actually do enjoy all the theory and practice of it all. Was wondering what everyone's, if you got any, fav math tricks were on the jobsite/workplace or do you just hate using math and try to avoid it as much as possible. As we all know theory and practice are two different things.
 
Top Knot said:
jmbfestool said:
I think that can be due to the screen resolution!
Click to expand...

I tend to disagree... if your assumption was correct the same would apply to all the right angles too. All the right angles I have tried have all been in a random orientation, meaning, if your screen resolution settings were out then the same effect would apply to both right angles and parallelograms.
I actually think is a carpenters in ability to see and to accept things out of square or unbalanced  [cool] [big grin]
Click to expand...

it tells you what to set it to on the site, its a 4;3 ratio apossed to the 16;9 we mostly have
 
Deansocial said:
Top Knot said:
jmbfestool said:
I think that can be due to the screen resolution!
Click to expand...

I tend to disagree... if your assumption was correct the same would apply to all the right angles too. All the right angles I have tried have all been in a random orientation, meaning, if your screen resolution settings were out then the same effect would apply to both right angles and parallelograms.
I actually think is a carpenters in ability to see and to accept things out of square or unbalanced  [cool] [big grin]
Click to expand...

it tells you what to set it to on the site, its a 4;3 ratio apossed to the 16;9 we mostly have
Click to expand...

The guidance on screen resolutions is to do with right angles only. A parallelogram is just 2 sets of parallel lines. All you are doing in that test is setting lines parallel to ones that are already there. For this test, it doesn't matter if the screen is set wrongly.
 
Ok here's a new math problem for people. A cone with a base diameter of 2 1/2" has its top sliced off at a 45 degree incline 3/4" from the base. determine the elliptical shape of the hole and develop the surface shape for material to be wrapped around this structure.

NO SKETCHUP!!
 
GhostFist said:
Ok here's a new math problem for people. A cone with a base diameter of 2 1/2" has its top sliced off at a 45 degree incline 3/4" from the base. determine the elliptical shape of the hole and develop the surface shape for material to be wrapped around this structure.

NO SKETCHUP!!
Click to expand...

What's the height of the cone?  [poke]
 
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