Tags » Geometry

In 4 space dimensions all knots can be unraveled

Nobel laureate Frank Wilczek reminds us in his tutorial article at the Quanta magazine that in 4 space dimensions all knots can be unraveled completely. He explains it as follows: 278 more words


Exterior Angle Sum Theorem

I made this quick activity for students to discover the exterior angle sum. I just printed several quadrilaterals and pentagons, cut out the exterior angles, and put them mixed up in a Ziplock bag. 97 more words


A Heuristic Approach to Angles in Circles

I am taking a qualitative research class right now, and my mind is full of lots of new-to-me words (many of which my spell checker doesn’t know, either): hermeneutics, phenomenology, ethnography, ethnomethodology, interpretivism, postpositivism, etc. 457 more words


Hinge Questions: Dilations

Students noticed and noted.

I wanted to be sure that they could answer a dilations question based on their observations. I had two questions premade in my set of Quick Polls. 187 more words