Question

I highlighted the diagram with the statement bc that’s what i need help on

Answer 1

Part 1

we have that

If AE=CE

then the triangle AEC is an isosceles triangle

so

has two equal sides and two equal interior angles

therefore

Part 2

we have that

triangle ADE is an isoceles triangle

therefore

DA=DE

Part 3

we have that

triangle BDF is an isosceles triangle

therefore

DF=BF

Part 4

ABC is an isosceles triangle

therefore