Question

Please help I don't understand!

Answer 1

Answer: SAS similarity theorem

Build proportional relation:

$\Rightarrow \sf \dfrac{AC}{BC} = \dfrac{EC}{DC}$

$\Rightarrow \sf \dfrac{200}{150} = \dfrac{320}{240}$

$\Rightarrow \sf \dfrac{4}{3} = \dfrac{4}{3}$

• So, the given that two sides are congruent and one angle equal.

Theorem followed: SAS similarity theorem