Answer:
G (3,-4) ; H (8,1)
Step-by-step explanation:
Midpoint formula:
(x₁ + x₂ / 2 , y₁ + y₂ / 2)
For G (Points B and A):
(3 + 3 / 2 , 1 + (-9) / 2)
(6/2 , -8 / 2)
(3,-4)
For H (Points B and C):
(3 + 13 / 2 , 1 + 1 / 2)
(16 / 2 , 2 / 2)
(8,1)
<h2>Solution:.</h2>
Let the ceilings be <em>a</em><em> </em><em>&</em><em> </em><em>b</em>
and the distance from one corner of the ceiling to the opposite be <em>c</em>
<em>then </em><em>using</em><em> </em><em>Pythagoras</em><em> theorem</em>

hence ,c .°. the distance from one corner of the ceiling to the opposite is<em> </em><em>2</em><em>0</em>
3180 because you divide 31800 by 10
Answer:
1. use the formula


2. use the formula

3. There is only one at 360 degrees
4. there are 6 rotational symmetries and the number of reflectional symmetries would be 6 as you can see: