Question

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Answer 1

Answer:

110=40+y

y=110-40= 70 (exterior angle is equal to interior opposite angle)

40+70+x=180 (sum of angles of triangle)

x=70

therefore ABC is an isosceles triangle.

The equal sides are AB and AC

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Answer 2

Answer:

x = 70⁰

y = 70⁰

Step-by-step explanation:

x = 180⁰-110⁰ ( linear pair of angle )

x= 70⁰

we know that ,

by angle sum property of triangle

^A+^B+^C = 180⁰

40⁰+x+y=180⁰

40⁰+70⁰+y = 180⁰

110⁰+y = 180⁰

y = 180⁰-110⁰

y = 70⁰