Question

In each of the following, find the unknown marked angle, giving reasons:

Picture of angle is above the question.

Warning: don't give useless ans!!!​

Answer 1

Answer:

the third angle inside the triangle

is

a+b+c=180°

70+60+c=180°

130+c=180°

c=180-130

c=50°

a=?

a+c=180

a+50=180

a=130°

answer 130°

Answer 2

Answer:

50

Step-by-step explanation:

So there are 70 degree and 60 and the corner inside one is'nt named so I will name it as y.

Now perimeter of triangle = A + B + C = 180 degree

So, = 70 + 60 + y = 180 degree

130 +y = 180

y= 180 - 130

y= 50

y + a (Linear pair) = 180

So , 50 + a = 180

a= 180-50

a=130

therefore a=130 degree

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