plane shape

circle

triangle

rectangle

how to join shapes together

square

plane, closed shape

flat, no opening

don't have straight sides

each point

same distance away from the center

rolls

examples

a button

pizza

a clock

three

angles

straight sides

two sides meet

form an angle

types

all sides same length

two sides same lengh

all different length

examples

a hanger

chips

a street sign

plane, closed shape

four

right angles

side that goes straight up and down

side that goes straight across

striaght sides

opposite sides

examples

a dresser

a poster

a book

same length

four

straight sides

right angles

all same length

type of a rectangle

examples

a window

a pan

tiles

triangles

squares

two triangles

a square

two longer triangles

a rectangle

two squares

a rectangle

add more squares

a wider, longer rectangle

can't join circles

no straight sides