Prefix Oct-

The members of the choir could sing in many different tone ranges. What are the tone ranges called?

• octaves

• octets

• octagons

• pentagons

Lee Elementary School hired the eight famous members of the Jones Junction band to play at their carnival. The eight-member group is called a what?

• solitaire

• octet

• octagons

• pentagons

The unique shape of the table allowed for exactly eight dinner guests. What is the shape?

• pentagon

• octave

• octet

• octagon

Which sentence uses octahedron correctly?

• The jeweler turned the crystal into an octahedron so it would shine more.

• The table was in the shape of an octahedron.

• My grandfather is an octahedron.

• The octahedron won eight awards.

Which prefix means eight?

• oct-

• penta-

• soli-

• tri-

We put 80 candles on my grandmother's birthday cake because she is now an __________.

• octagon

• octopus

• octogenerian

• octet

Which sentences uses octogenarian correctly?

• The little girl was an octogenarian on her 8th birthday.

• He created an octogenarian with the diamond.

• My grandfather is an octogenarian.

• The athlete won eight awards and became an octogenarian.

This creature has suction cups on every one of its eight tentacles.

• octet

• octave

• octopus

• octagon

(a)   used to be the eighth month until July and August were added.

What is the name of a 3-D shape with eight faces?

• decahedron

• octahedron

• cube

• pyramid