Question

construct ∆ABC ,given mA =70°,mB=40°and AB =5.1cm​

Answer 1

Step-by-step explanation:

step 1: draw 5.1cm line segment (AB)

step 2:draw a ray at point A making an angle of 70° with line segment AB

step 3:draw another ray making an angle of 40° at point B with line segment AB

step 4: the intersection of two rays is your point C, there you see your required triangle ABC