Question

Question 6. In the given figure, the measure of ABC is A 100 B с (a) 80° (b) 20° (c) 100 (d) 60°​

Answer 1

Answer:

80°

Step-by-step explanation:

Correct option is

(A) 80°

∠ACB+100°=180°∠ACB=180°−100°=80°

∠BAC=20°  (Vertically opposite angle)

So, In triangle ABC, by angle sum property; ∠BAC+∠ACB+∠ABC=180∘

Thus, ∠ABC=180°−80°−20°=80°

Answer 2

Answer:

in a triangle abc ab is 3cm and ac is 4cm then BC is