Question

Find the unknown angles in the following figures​

Answer 1

Answer:

x=140* and y= 105 *

Step-by-step explanation:

by the external angle rule

Answer 2

Answer:

1 question. angle 80= angle P ( vertically opposite angles )

angle PRQ = 180-angle x ( liberation pair

angle PQR = angle PRQ ( angles opposite to equal sides are equal)

angle P + angle Q = x ( exterior angle property of a triangle)

80 + 180 - x = x

2x = 260

x= 130

question 2 angle B = angle C ( sides opposite to equal sides are equal)

angle C = angle B = 180 -y ( linear pair)

30 + 180 - y = y

210 = 2y

y= 105