Read the proof Given: AE 1 EC BD DC
Prove: AAEC - ABDC
A
Statement
Reason
1. AE1 EC BD 1 DC
1. given
2. ZAEC is art.2: LBDC is a 2. definition of
perpendicular
3. ZAEC LBDC
3. all right angles are
congruent
14.2
4. reflexive property
5. AAEC - ABDC
15. AA similarity theorem
What is the missing statement in step 4?
B
E
С
O ZACE ZBCD
D
LEAB ZDBC
LEAC LEAC
LCBD 2DBC

point m is on plane r

perimeter = 10 +  √10  units

explanation:

first, we will need to get the length of each line using the distance formula which is as follows:

distance = 

1- length of ab:

ab =   = 5 units

2- length of ac

length of ac is the same as ab = 5 units

3- length of bc:

bc =   =  √10  units

now, we can get the perimeter by adding the side lengths as follows:

perimeter = 5 + 5 +  √10

perimeter = 10 +  √10  units

hope this : )

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