Dot Product of Vectors

Project ID: 
7260000075
Accepted: 
Type: 
Layout: 
Question: 
We are given a regular hexagon $ABCDEF$ with the center $S$ and with side length of $1$. In the hexagon, the vectors $\vec a$, $\vec b$, $\vec c$, $\vec d$ and $\vec e$ are highlighted (see the picture). Calculate the dot products of the given pairs of vectors and match each product with its correct value.
Unfolding Image: 
Questions Title: 
Dot products:
Answers Title: 
Results:
Question 1: 
$\vec a\cdot\vec b$
Answer 1: 

$-\frac12$

Question 2: 
$\vec a\cdot\vec c$
Answer 2: 

$\frac32$

Question 3: 
$\vec b\cdot\vec d$
Answer 3: 

$\frac12$

Question 4: 
$\vec c\cdot\vec e$
Answer 4: 

$0$

Question 5: 
$\vec c\cdot\vec b$
Answer 5: 

$-\frac32$

Question 6: 
$\vec a\cdot\vec d$
Answer 6: 

$-1$

Question 7: 
$\vec c\cdot\vec c$
Answer 7: 

$3$

Question 8: 
$\vec e\cdot\vec e$
Answer 8: 

$1$