What do the names of the months come from?

What do the names of the months come from?

The modern Gregorian calendar has roots in the Roman calendar, specifically the calendar decreed by Julius Caesar. So, the names of the months in English all have Latin roots. Note: The earliest Latin calendar was a 10-month one, beginning with March; thus, September was the seventh month, October, the eighth, etc.

How polygons got their names?

Individual polygons are named (and sometimes classified) according to the number of sides, combining a Greek-derived numerical prefix with the suffix -gon, e.g. pentagon, dodecagon. Some special polygons also have their own names; for example the regular star pentagon is also known as the pentagram.

How did October get its name?

October, 10th month of the Gregorian calendar. Its name is derived from octo, Latin for “eight,” an indication of its position in the early Roman calendar.

Where did the names of the days of the week come from?

The days were named after the planets of Hellenistic astrology, in the order: Sun, Moon, Mars (Ares), Mercury (Hermes), Jupiter (Zeus), Venus (Aphrodite) and Saturn (Cronos). The seven-day week spread throughout the Roman Empire in Late Antiquity.

What is a polygon with 100 sides called?

Convex, cyclic, equilateral, isogonal, isotoxal. In geometry, a hectogon or hecatontagon or 100-gon is a hundred-sided polygon.

What was August called before Augustus?

Sextilis
After Caesar’s death, the month Quintilis was renamed July in honor of Julius Caesar in 44 BC and, later, Sextilis was renamed August in honor of Roman Emperor Augustus in 8 BC.

How do you name a polygon with more than one side?

There are (ridiculous) names for polygons with many more sides (see wikipedia:Polygon ), but generally for larger numbers of sides, one uses the number of sides followed by “-gon”. We talk about 7-gons and 8-gons for instance (instead of the harder to remember names heptagon or octagon).

What is the best way to review the polygon names?

Naming polygons game This could be a great way to review the polygon names. The polygon game shows a shape and then asks you questions about the name or number of sides. 1. Regular Polygons have equal length sides ( congruent sides)

What are the different types of polygons?

Polygons can be regular or irregular. They can be simple or complex, convex or concave. They can be the familiar shapes you see in geometry textbooks, or they can be strange shapes, like darts and bowties. The word ” polygon ” means “many-angled,” from Greek. To be a polygon, a flat, closed shape must use only line segments to create its sides.

How do you know if a shape is a polygon?

To be a polygon, the shape must be flat, close in a space, and be made using only straight sides. Polygons with congruent sides and angles are regular; all others are irregular. Polygons with all interior angles less than 180° are convex; if a polygon has at least one interior angle greater than 180°, it is concave.