Online Course Discussion Forum

Math Challenge I-A Geometry

 
 
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Math Challenge I-A Geometry
by Yuhan Wei - Wednesday, October 6, 2021, 9:12 PM
 

I don't get what question 4.26 is asking me to do. I am still confused after the answer was uploaded by the teacher.

 
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Re: Math Challenge I-A Geometry
by Dr. Kevin Wang - Thursday, October 7, 2021, 1:51 AM
 

(I moved this question out from an announcement post to be its own thread.)

Draw an equilateral triangle.  Connect the midpoints of the sides of this equilateral triangle.  Now the big triangle is divided into 4 smaller ones.  Your task for this problem is to prove that these smaller triangles are all equilateral, and they are all congruent to each other.