Ben began at (3, 1) and walked to (4, 5); Katie decided to begin at (–3, 1), then tried to mirror Ben by walking to (–4, 5). Ben jumped to (5, 5) and side–stepped to (4, 3); Katie jumped to (–5, 5) then side–stepped to (–4, 3). Ben returned to (3, 1) and Katie returned to (–3, 1)

Part 1) The least possible measure of angle ADC is 2 degrees

Part 2) The greatest possible measure of angle ADC is 178 degrees

Step-by-step explanation:

we know that

An acute angle is an angle that measures less than 90 degrees and greater than 0 degrees

Remember that

The two angles have the same whole number measure

so

The measure of angle ADC is equal to

---> by Addition Angle Postulate

so

The least possible measure of ADC is for

----> remember that is a whole number

so

The greatest possible measure of ADC is for

----> remember that is a whole number

so