Question

In figure if ∠A + ∠B + ∠C + ∠D + ∠E + ∠F = M right angles, then find value of M.

Answer 1

Answer:

Since ∠A + ∠B + ∠C + ∠D + ∠E + ∠F are equal to

sum of two triangles

∆ + ∆ = 180 + 180 = 360

360/90 = 4

Hence ∠A + ∠B + ∠C + ∠D + ∠E + ∠F = 4 right angles