Course Activity: Coordinate Systems <
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Use this online sky map to view the stars and constellations that will be visible tonight where you
live. On the star map, click the city and state link that appears at the top center of the map. In the menu
that appears, type your current city and state into the location field and press Go! Then click the tab
labeled Time in the menu above the map. Use today's date but insert a time of 22:00 (10:00 p. m.).
The circle on the screen filled with stars and constellations represents the hemisphere above the
observer in your location on Earth. The zenith, the point directly overhead, is in the center of the circle.
The perimeter of the circle is where the sky meets the horizon. Zoom in and maneuver the map until
you've located the constellation Ursa Minor, which is also known as the Little Dipper. Zoom in on Ursa
Minor until you can clearly see all seven of its stars.
Draw and connect the stars of Ursa Minor and label the star Polaris.
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2:20 PM
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Write a program that displays the following menu: geometry calculator 1. calculate the area of a circle 2. calculate the area of a rectangle 3. calculate the area of a triangle 4. quit enter your choice (1-4): if the user enters 1, the program should ask for the radius of the circle and then display its area. use the following formula: area = ď€(the square of r) use 3.14159 for ď€ and the radius of the circle for r. if the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangle’s area. use the following formula: area = length * width if the user enters 3, the program should ask for the length of the triangle’s base and its height, and then display its area. use the following formula: area = base * height * .5 if the user enters 4, the program should end. input validation: display an error message if the user enters a number outside the range of 1 through 4 when selecting an item from the menu. do not accept negative values for the circle’s radius, the rectangle’s length or width, or the triangle’s base or height. note: if the user enters an improper menu choice (1-4), the program prints "the valid choices are 1 through 4. run the program again and select one of those." if the user enters a negative radius, the program prints "the radius can not be less than zero." if the user enters a negative value for height or base, the program prints "only enter positive values for base and height."