Answer:
by reason
and
.
SAS Theorem
Explanation:
We proceed to demonstrate the statement by Geometric means:
1)
,
,
Given.
2)
Proportionality.
3)
Definition of line segments.
4)
Algebra.
5)
Algebra.
6)
Algebra.
7)
By 1)
8)
By 1), 7)
9)
,
By 1), 7), 8). Defintion of simmilarity.
10)
,
Definition of proportionality.
11)
Algebra.
12)
Algebra.
13)
By 12) and Algebra.
14)
By 13).
15)
SAS Theorem/Result.