It is agreed that a line drawn from the most northwestern point of the Lake of the Woods, along the 49th parallel of north latitude, or, if the said point shall not be in the 49th parallel of north latitude, then that a line drawn from the said point due north or south, as the ...
A globe is a model of the earth. Globes have horizontal and vertical lines that make up a coordinate grid system. The horizontal lines that cross the earth are the lines of latitude. The vertical lines that cross the earth are the lines of longitude. Each latitude and longitude line has a...
The Earth is, almost, but not quite, a sphere thatrotates around its axis. Scientists call this shape aspheroidorellipsoid. If we draw a line passing through the center of the Earth along its rotational axis, the line would pass through the North and the South Pole. Theequatoris an imagi...
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coordinate system, Arrangement of reference lines or curves used to identify the location of points in space. In twodimensions, the most common system is the Cartesian (afterRené Descartes) system. Points are designated by their distance along a horizontal (x) and vertical (y) axis from a re...
Determine a location's position on the map based on your coordinates. For example, count from left to right and from bottom to top to locate position (3,5), where the first number is the horizontal axis value and the second number is the vertical axis value. Mark the spot with a penci...
See thisworld map latitude longitudelines, oceans, continents and poles? The horizontal lines at the top and bottom are half as long as the equator line in theEckert IV projection. Right click and then view image to see a bigger version. In this example, the latitude lines are 15 deg...
are approximately 69 miles or 111 km apart, with variation due to the fact that the earth is not a perfect sphere but an oblate ellipsoid (slightly egg-shaped). To remember latitude, imagine the lines as horizontal rungs of a ladder, "ladder-tude", or by the rhyme "latitude flat-itude...
A horizontal roof (tilt angle = 0o) has no azimuth angle. A tilted roof has the azimuth angle of the equivalent wall (lift the roof on it's hinge with the wall until it is vertical). The intensity of the sun's ray on a wall or roof is the component perpendicular to the surface....
are approximately 69 miles or 111 km apart, with variation due to the fact that the earth is not a perfect sphere but an oblate ellipsoid (slightly egg-shaped). To remember latitude, imagine the lines as horizontal rungs of a ladder, "ladder-tude", or by the rhyme "latitude flat-itude...