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On a map, the differences in elevation are best shown using contour lines.
It can be shown that:height = (d tan α tan β)/(tan α - tan β)where: α is the angle closest to the objectβ is the angle further away from the objectd is the distance from the point of angle α to the point of angle βThus: height = (80 ft × tan 45° × tan 34°)/(tan 45° - tan 34°) ≈ 165.78 ft
The highest elevation line shown on the map depends on what is the highest point - which is often the summit of a hill or mountain.
The total elevation change shown on a map refers to the difference in elevation between the highest and lowest points represented on that map. It is calculated by subtracting the lowest elevation from the highest elevation indicated. This measurement is important for understanding the topography of an area and can influence activities such as hiking, construction, and land use planning. Elevation changes can be depicted through contour lines, color gradients, or other graphical representations on the map.
Contour lines
side- angle- side
perpendicular
90
bac
Two sides and the included angle of one triangle must be congruent to two sides and the included angle of the other.
topographical map.
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