Name: 非共軛形狀和變換 (Non-congruent shapes & transformations)
Uploaded: 2021-01-14T10:13:45.000Z
Duration: 2 min 3 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

to 不定詞

- [Instructor] We are told, Brenda was able to map

This is circle M, this circle right over here.

It looks like at first, she translates it.

The center goes from this point to this point here.

After the translation, we have the circle

The center of dilation looks like it is point N.

She dilates it with some type of a scale factor

Brenda concluded, "I was able to map circle M

She was able to map circle M onto circle N

She did a translation and then a dilation.

but they are not all rigid transformations.

I'll put a question mark right over there.

preserve angle measures, preserve lengths,

while a dilation is not a rigid transformation.

It is not, for example, preserving the radius

In order for two figures to be congruent,

the mapping has to be only with rigid transformations.

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非共軛形狀和變換 (Non-congruent shapes & transformations)

scale

preserve

conclusion

sequence