# quadrilateral squares center midpoint congruence math pythagoras triangle incenter excircle altitude collinear right inscribed teacher equilateral circle bisector diagonals angles ipad adobe semicircle chord diameter regular heptagon side teachers midpoints maths angle rhombus scalene triangles geogebra cyclic tangent art space nature different black hole sun views circles hypotenuse perpendicular
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Problem 800: de Gua's Theorem, Pythagorean theorem in 3-D

Details: https://t.co/MIDNBStq5t

3 8
2016-06-10

Problem 1169: Complete Quadrilateral. Apps; Spark Post

Details: https://t.co/fj8xo6EjHO

0 3
2016-06-04

Hair geometry is by far the hardest for me

5 88
2016-05-22

Problem 297: Secant, Radius, Perpendicular

View on web: https://t.co/gZXlHQzMsE

0 0
2016-05-20

1 artist, 1 rhino, some high school geometry &a whole lot of masking tape!

4 13
2016-05-17