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Lecture 5 Assignment

 
 
Picture of Blair Chen
Lecture 5 Assignment
by Blair Chen - Monday, January 22, 2024, 8:21 PM
 

Hi,

The areteem professor in our homework discussion did not go over problem 5.27. I'm not really sure how to start that one. I tried labeling the sides.

For 5.30, the areteem professor did not go over it as well. For part a, what is the formula for area of a hexagon. For part b, what is a dodecagon? And what is its formula?

Thanks


 
Picture of Dr. Kevin Wang
Re: Lecture 5 Assignment
by Dr. Kevin Wang - Wednesday, January 24, 2024, 12:14 AM
 

Please specify the class you are taking.  Students from all classes post here and it could get confusing about which class the question came from.

In any case, it appears that this is about Math Challenge I-C Winter 2023-24 class.  Problem 5.27 has a bunch of isosceles right triangles  (45-45-90) in the diagram.  As a hint, what are the lengths of $BE$ and $EC$?

In 5.30, a regular hexagon can be divided into six equilateral triangles.  A dodecagon is a $12$-sided polygon. To calculate the area, you may want to connect its vertices with its center.


 
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