Answer:
C.Vertical angles prove that angle 3= angle 6
D.The triangles are similar because alternate interior angles are congruent.
Step-by-step explanation:
When line d is parallel to line c.
We have to find the true statements about the figure.
Then, [tex]\angle 3=\angle 6[/tex](Vertical angles are equal)
[tex]\angle 1=\angle 4[/tex]
[tex]\angle 2=\angle 5[/tex]
Reason: Alternate interior angles
Two triangles are similar by AA postulate
Reason:Alternate interior angle are congruent.
Option C and D are true.
C.Vertical angles prove that angle 3= angle 6
D.The triangles are similar because alternate interior angles are congruent.