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Results of Search: 176,291 lines — Showing 130661 - 130680.
Course Level Date Clip# Line Interlocutor Content
- - - 1 249 T yeah.
- - - 1 250 S has those two angles have to add up to ninety degrees.
- - - 1 251 T they have to add up to ninety degrees, but if I define the three angles will I get congruent triangles?
- - - 1 252 UNK %xTEA:I was so pleased when the students introduced the concept of three angles and this led to a very productive discussion.
- - - 1 253 S um
- - - 1 254 SN yes.
- - - 1 255 SN no.
- - - 1 256 T why not?
- - - 1 257 S because they'll be different lengths.
- - - 1 258 T they could be different lengths so I could have another one exactly the same only smaller with the same three angles.
- - - 1 259 T so three angles is no good.
- - - 1 260 T but I've still got this right angle here.
- - - 1 261 T I can define it as two sides and an angle, or I can also define one side and the other side.
- - - 1 262 T the hypotenuse and it will always be the same with a right angle triangle.
- - - 1 263 T all right?
- - - 1 264 T so this one is written as s a s , side angle side.
- - - 1 265 T and the a goes in the middle to show you that the angle has to be between the two sides.
- - - 1 266 T this one is written as, can you guess?
- - - 1 267 SN s s s .
- - - 1 268 T s s s .