Teacher asked students to check whether 40° and 140° form a linear p

1.	Teacher asked students to check whether 40° and 140° form a linear pair or not by drawing angles. The students have drawn as follows. Who will get correct answer?
Answer» Raheem: ∠AOD = 140°, ∠BOC = 40° they are not adjacent angles and not linear pair. So, Raheem is not correct. Mary: ∠COD = 140°, ∠BOC = 40° they are adjacent angles, but they are not linear pair. So, Mary answer is not correct. Roshitha: ∠XOZ = 140°, ∠ZOY = 40° they are adjacent angles and linear pair. So, Roshitha answer is correct.

Teacher asked students to check whether 40° and 140° form a linear pair or not by drawing angles. The students have drawn as follows. Who will get correct answer?

Answer»

Raheem:

∠AOD = 140°, ∠BOC = 40°

they are not adjacent angles and not linear pair.

So, Raheem is not correct.

Mary:

∠COD = 140°, ∠BOC = 40°

they are adjacent angles, but they are not linear pair.

So, Mary answer is not correct.

Roshitha:

∠XOZ = 140°, ∠ZOY = 40° they are adjacent angles and linear pair.

So, Roshitha answer is correct.