HOW THE SHAPES GOT THEIR NAMES

TRIANGLE

• A plane figure with three straight sides and three angles.
• Triangle came from the Latin word for trianguli.
• The actual word triangle was created between 1350-1400 A.D.

RECTANGLE

• A plane figure with four straight sides and four right angles.
• Rectangle came directly from rectangulum by combining form of Latin rectus "right".
• The actual word rectangle was created between 1565-1575 A.D.

CIRCLE

• A round plane figure whose boundary consists of points equidistant from a fixed point.
• The word circle came from the Latin word circulus.
• The actual word circle was created before 1000A.D.

SPHERE

• A round solid figure, with very point on its surface equidistant from its center.
• The word sphere came from the Greek word spaira.
• The actual word sphere was created between 1250-1400 A.D.

CONE

• A solid object that tapers from a circular or roughly circular base to a point.
• The word cone came from the Greek word konos.
• The actual word cone was created between 1480-1490 A.D.

CYLINDER

• A solid geometric figure with straight parallel sides and a circular or oval cross section.
• The word cylinder came from the Greek word kylindros.
• The actual word cylinder was created between 1560-1570 A.D.

WORKS CITED IN MY RESEARCH

• Prezi.com
• Dictionary.reference.com