Step 1:
Draw the base line AB of the length 7 cm.
Step 2:
Measure the angle B with your protractor. Make a mark at 55 degrees and draw a line from B passing through the mark.
Step 3:
Cut an arc of radius 9 cm on the line passing through the point B. The point where this arc cuts the line is the point C.
Step 4:
Draw a line from A to point C to get the required triangle ABC, as shown below.
From the above construction, we see that the measure of ∠A is 76∘.