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Wewaii [24]
3 years ago
15

Given: ​​ ​​△ABC, FC¯¯¯¯¯ ∥BA¯¯¯¯¯, and A F¯¯¯¯¯ bisects ∠BACProve: ABBD=ACCD

Mathematics
2 answers:
Papessa [141]3 years ago
8 0

Answer:

See proof

Step-by-step explanation:

       Statement                                             Reason

1. \triangle ABC, \overline{FC}\parallel \overline {BA} and \overline{FA} bisects \angle BAC - Given

2. \angle BAD\cong \angle CAD                                       - Definition of angle bisector

3. \angle BAD\cong \angle CFD                                       - Alternate interior angles theorem

4. \angle CFD \cong \angle CAD                                       - Substitution property

5. \bf{\angle ADB\cong \angle CDF}                                      - Vertical angles are congruent

6. \triangle ADB\sim \triangle FDC                                     - AA Similarity postulate

7. \dfrac{AB}{BD}=\dfrac{FC}{CD}                                                - Definition of similar triangles

8. AC=FC                                                  - Converse of base angles theorem

9. \dfrac{AB}{BD}=\dfrac{AC}{CD}                                                - Substitution property                            

notsponge [240]3 years ago
4 0

Answer:

i just did the test so for future ppl

Step-by-step explanation:

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