Use the number line to find the distance of the line segment. You may use the absolute value of the difference or count the steps

step-by-step explanation:

given: ∠d and ∠b are right angles dc || ab.

to prove: △adc ≅ △cba

proof:

statement                                                                   reason

1. ∠d and ∠b are right angles                                 given

2. ac=ac                                                               common hypotenuse

3. △adc ≅ △cba                                                 hypotenuse angle theorem

therefore, △adc ≅ △cba by hl theorem.

hence proved.