Final answer:
The measure of angle ZSDC is 110°.
Step-by-step explanation:
To find the measure of angle ZSDC, we need to find the difference between the measures of angle ZEDC and angle ZEDS.
Given that angle ZEDC is 157º and angle ZEDS is 47º, we can find the measure of angle ZSDC by subtracting the measure of angle ZEDS from the measure of angle ZEDC:
angle ZSDC = angle ZEDC - angle ZEDS = 157º - 47º = 110º
Therefore, the measure of angle ZSDC is 110°.