In the ordered pair (3, 5), which number gives the x (horizontal) position?
AnswerThe first number, 3
Ordered pairs are written (x, y), so the first number is the horizontal position.
Science · Facts & stats
Grid facts & stats
7 fact-checked facts about grids, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
A digital image is a grid made up of tiny units called what?
AnswerPixels
Pixels, short for 'picture elements', are arranged in rows and columns to form a digital image.
Going deeper
In which quadrant of a coordinate grid are both x and y negative?
AnswerQuadrant III
Quadrants are numbered counterclockwise from the upper right, and Quadrant III is the lower left.
On a map grid, in which direction do lines of latitude run?
AnswerEast to west
Lines of latitude circle the globe east to west, parallel to the equator.
On a globe, what are lines of longitude also called?
AnswerMeridians
Lines of longitude are meridians, running from pole to pole; lines of latitude are parallels.
Expert level
Manhattan's famous street grid was laid out in the Commissioners' Plan of which year?
Answer1811
The Commissioners' Plan of 1811 set out Manhattan's rectangular grid of numbered streets and avenues.
Ancient Greek planner Hippodamus of Miletus is often called the father of what?
AnswerGrid-based city planning
Hippodamus is linked with laying out cities on regular grids, known as the Hippodamian plan.
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