Fist please timing before see the below image and see how long it'd take you to find the answer
This is a bonus question from my kid's test and it's interesting to tease your brain
Please respond in minutes
When I was a kid (when dinosaurs roamed the earth) we could do this in 4th grade. (x+2, y+3)
It's correct - how many min/sec?
With checking each case, less than 30 seconds, however, with me, engineering, math, and details are mostly easy.
Not sure what you mean by "rule"... X2 = x1 + 2, y2 = y1 + 3? Took about 1 minute?
It took me less than a minute once I read your reply. I daydreamed in class and cribbed your test instead.
Just copied and pasted from the test. Like you, I was wondering what teacher meant by "write a rule" as it's new way (common core) kinds are learning now
First off, it took me longer to type my answer than to arrive at it.
Secondly, the "teacher" is 100% wrong - those are identical triangles. When two triangles are the same size they are geometrically identical even if they are translated in space.
Thirdly, this was merely an exercise in coordinate translation (not even rotation or reflection). (Way to go to dumb down math!)
Fourthly, submit this to the courts as evidence of the sad state of affairs in our educational system.
This is why we can't have nice things.
Sorry, but the correct mathematical term should have been "congruent".
"Secondly, the "teacher" is 100% wrong - those are identical triangles. When two triangles are the same size they are geometrically identical even if they are translated in space."
I think it's correct as teacher wanted the students to "write a rule" that change the vertices on a X-Y corrdinate
The teacher underlined 'similar' which also has a specific meaning in geometry terms. So the teacher is still wrong.
Just because they are also congruent, it is no less correct (although less precise) to describe them as similar.
Josh, no, similar triangles have the same angles but NOT the same side lengths by definition. Not a matter of less/more precise when mathematics are involved - there is a correct answer.
Congruent triangles are a special subset of similar triangles. The definition of similarity does not require that the ratio of side lengths not equal to unity. Calling a square a rectangle is not incorrect. Calling a rectangle a parallelogram is not incorrect. Calling an integer a real number is not incorrect.
actually, "underline" is my mark
you guys are smarter than I'm - took me more than one minute !
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