Question

pls answer question no. 19​

Answer 1

Answer:

Now ,We can use the angle sum property of a triangle and straight angle property of a line.

Step-by-step explanation:

First , Let us find the angle of

$< d$

angle d is = 50 +70+X

120+X=180°

X=180-120

=60°

now using the straight angle property,

X +a = 180°

60+a=180°

a=180-60

=120°

now using the same angle sum property of a triangle,

23°+120°+y=180°

143°+y =180°

Y =180-143

= 37°

Answer 2

Answer:

x = 60°

y = 37°

Step-by-step explanation:

         50° + 70° + x = 180°                          (∠ sum of Δ)

                             x = 180° - 50° - 70°

                          ∴ x = 60°

         (23° + 50°) + 70° + y = 180°                        (∠ sum of Δ)

                      73° + 70° + y = 180°

                                          y = 180° - 73° - 70°

                                      ∴ y = 37°

Hope it's helpful.