Study Link 3.7

3.8 Regular Tessellations

I can describe side and angle relationships in regular tessellations.I can compare quadrilaterals.

I can classify quadrilaterals.

In a regular polygon all sides are the same length, and all angle measures are equal.

What is a tessellation?

An arrangement of repeated, closed shapes that cover a surface so no shapes overlap, and there are no gaps between any shapes.

A tessellation with shapes that are congruent, regular polygons is called a regular tessellation.Some tessellations repeat only one shape, others combine two or more shapes.

Exploring Regular Tessellations

Use the cut-outs and/or the shapes on your geometry template to complete Journal pages 82-83.

Tessellation Creatorhttp://illuminations.nctm.org/ActivityDetail

.aspx?ID=202

Classifying Quadrangles (from 3.7)

True or False?All squares are parallelograms. _______All rhombuses are rectangles._________A kite is a rhombus.___________All quadrangles are parallelograms._____Trapezoids are not parallelograms.______All rhombuses are parallelograms.______

Fill in the blanks with always, sometimes, or never.

Squares are __________ rectangles.Rhombuses are ___________ rectangles.Trapezoids are ____________ rectangles.A kite is _____________ a parallelogram.Rectangles are ____________ squares.

Exit Slip

Create 3 statements similar to the ones we just did (but they can not be the same statements).

One should be a sometimes statement.One should be a never statement.One should be an always statement.

Angle Tangle

SRB 296MM 444

Math Boxes

Journal page 84Raise your hand to be checked.Once they are all correct you can get a

partner and play “Angle Tangle”.

Study Link 3.8MM 91