MP7: The Diagonal of an Isosceles Trapezoid

16 Aug


SMP7 #LL2LU Gough-Wilson

I’ve written about the diagonals of an isosceles trapezoid before.

When we practice “I can look for and make use of structure”, we practice: “contemplate before you calculate”.

We practice: “look before you leap”.

We ask: “what you can you make visible that isn’t yet pictured?”

1 Screen Shot 2016-04-10 at 1.33.22 PM.png

We make mistakes; the first auxiliary line we draw isn’t always helpful.

Or sometimes we see more than is helpful to see all at one time.

2 Screenshot 2015-11-05 09.53.03.png

We persevere.

3 Screenshot 2015-11-05 09.53.24.png

Even with the same auxiliary lines, we don’t always see the same picture.

4 Screen Shot 2016-04-10 at 1.38.32 PM.png 5 Screen Shot 2016-04-10 at 1.38.24 PM.png

We learn from each other.

And so the journey to make the Math Practices our habitual practice in learning mathematics continues …

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Posted by on August 16, 2016 in Angles & Triangles, Geometry, Polygons


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