Construct an isosceles triangle whose base is 6 cm and whose vertical angle is 75 degree.
Steps of construction are as follows :
Step 1 : Draw AB = 6 cm
Step 2 : With A as centre draw rays AX such that ∠BAX = 75°
Step 3 : With B as centre draw Ray BY such that ∠ABY = 75° cutting AX at C
Now ABC is the required triangle with base AB and ∠CAB = ∠CBA = 75°