# iteachmath geometry proof math edtech maths 3d augmentedreality userfriendly easytouse crosssections ios android cube 3dmodel stem steam mathart processing experiment letstudentscreate letstudentscollaborate letstudentsbuild letstudentstest howtoprove geomchat mathchat

Here, we have a right triangle with its incircle, excircle, & points of tangency to be shown. How can we prove the collinearity among the 3 points (shown at the end)? (Source: ). https://t.co/CGNxP7i5Hz

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2019-07-30

30-60-90 triangles properties

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2019-07-26

Drawing a diameter with two circles

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2019-07-17

Equilateral triangle to square dissection

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2019-07-16

Ts: Want to engage your Ss in active modeling fun? 3D has all the tools you need! And we can use to test modeling accuracy! 🙂 Re: getting started: https://t.co/tVhsrPTAcV.

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2019-07-16

Opposite angles in a cyclic quadrilateral add up to 180 degrees

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2019-07-11

Exploring cube w/in in a beta version of coming soon to both & platforms. Love how we’ll be able to plot the intersection of both from INSIDE THE 😮

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2019-07-02

Area of a Regular Dodecagon

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2019-06-22

Testing, testing! Round and around. Just a test!

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2019-06-21

Angle between the diagonal and base of a cuboid

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2019-06-18

with can help make these ACTUAL REALITIES in our classes. If we live in a 3d world, why remain only in the 2D CP? https://t.co/tVhsrPTAcV

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2019-06-17

Regular dodecagon - Dissection into 15 rhombs

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2019-06-13

Dissection of square to regular hexagon

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2019-06-01