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kasperpeulen / euclidthegame

A geometry game based on Euclid's Elements.
euclidthegame.org
MIT License
447 stars 74 forks source link

Level 11 - cannot pass through, yet solution is correct. #214

Open hgh-hgh opened 10 years ago

hgh-hgh commented 10 years ago

Got jammed @ level 11.

This level proposes to create an angle from point D to the line which equals to given angle BAC.

My solution:

  1. Using Compass tool creating a circle on D with radius equal to AB
  2. Intersecting this circle with line D (got point J)
  3. Using Compass creating a circle on J with radius equal to BC. 4 Intersecting two circles (got points K and L). Both triangles DJK and DJL are equal to ABC, which means angles JDL and JDK are equal BAC.

Yet, app does not let me go through.

elyashiv commented 10 years ago

The answer is wring. DJ = DK but AB != AC. try moving around the points to get a better view. Or draw some more circles.