Geometry Coding Lesson #3

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Graph Manipulation Instructions

Click and drag on the graph window to move the viewpoint around. Scroll on the graph window to zoom in and out.

The doorstop factory is making triangle shaped doorstops. You come up with a new idea for a doorstop that will work much better than the current one. Previously, the doorstops were 5 inches wide by 2.88 inches tall. Your new doorstop idea is 7 inches wide by 3 inches tall. You think that since it is longer it will stop the door better. Your manager thinks this is a great idea, and asks for the angle of elevation. Find the measure of Angle A in your new doorstop plan.

You will need a scientific calculator for this problem, if you don't have one, click here.

Input angle A's measure below.



This is an original problem that I came up with. You work in a doorstop factory, and have to find the angle of the doorstop idea that you came up with. If you want more information on how to solve the problem, hit the hints button.

See the Pen Geo Lesson 3 by Nate (@Naitron) on CodePen.

You have not used any hints yet, this area shows your previously used hints.

  • Made origin lines toggleable
  • Added a black border to this right panel
  • Removed Cookies, not needed this lesson
  • Added a progress bar