Question

Which are the linear pairs in following figures ?
find the measure of unknown angles ​

Answer 1

Step-by-step explanation:

The magnetic induction method is a contact measurement method. An exciter current generates a low-frequency magnetic field, the strength of which is dependent on the distance between the measuring probe and the base material - i.e. the thickness of the non-magnetisable coat.

Answer 2

Answer:

(1) ∠a and ∠b ; ∠b and ∠c ; ∠c and ∠d ; ∠d and ∠a are pairs of linear pair angles.

(2)(i)

We know that the sum of 2 angles in a linear pair is 180°. So, by substituting the values, we can find the measure of x°

⇒ 135° + x° = 180° (Linear pair property)

⇒ x° = 180° - 135°

⇒ x° = 45°

(ii)

We know that the sum of 2 angles in a linear pair is 180°. So, by substituting the values, we can find the measure of y°

⇒ 57° + y° = 180°

⇒ y° = 180° - 57°

⇒ y° = 123°

(iii)

We know that the sum of 2 angles in a linear pair is 180°. So, by substituting the values, we can find the measure of a°

⇒ 95° + a° = 180°

⇒ a° = 180° - 95°

⇒ a° = 85°

Thnx and have a nice day!