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

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

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.

"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.

James,

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.

James,

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.

When I was a kid (when dinosaurs roamed the earth) we could do this in 4th grade. (x+2, y+3)