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Kobotan [32]
3 years ago
6

Please help! need the answer to this

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

AB ≅ AC since triangle ABC is an isosceles triangle.

Step-by-step explanation:

  • If angle 1 and angle 2 are equal, then triangle ADE is an isosceles triangle.
  • Since line DE is parallel to line BC, then angle 2 is equal to angle 3 and angle 1 is equal to angle 4 (corresponding angles are equal).
  • Since angle 3 is equal to angle 2 and angle 4 is equal to angle 1, then angle 3 is equal to angle 4.
  • Since angle 3 is equal to angle 4, then triangle ABC is an isosceles triangle that have equal base angles (i.e angle 3 and angle 4).
  • The two sides of the isosceles triangle ABC (i.e sides AB and AC) are also equal.
  • Hence AB ≅ AC
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