Option D:

Solution:
Reflexive property of congruence:
<em>Reflexive property of congruence means the geometric figure is congruent to itself.</em>
Option A: If 
From the definition of reflexive property, it is not true.
This is transitive property of congruence triangles.
Therefore it is false.
Option B: 
From the definition of reflexive property, it is not true.
Therefore it is false.
Option C: 
From the definition of reflexive property, it is not true.
Therefore it is false.
Option D: 
Here, ΔKLM is congruent to itself.
This statement illustrates the reflexive property of congruence for triangles.
Therefore, it is true.
Hence option D is the correct answer.
Answer:
HH TT HT TH
Step-by-step explanation:
My extremely bad makeshift tree diagram:
the first column is our first flip, second column is our second
H
H-
T
possible outcomes -
H
T -
T
Answer:60
Step-by-step explanation:all sides of the triangle have to be 180 degrees
it could be 2.2 because every 5 you get 2 so it would be 10 and 4 so when y=6 then x should be 2.2.