Calculate the unknown angles — task. Mathematics CBSE, Class 7.

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Determine the value of

$x$ and

$y$ in the following figures.

In the following triangle

$ABC$ ,

$m = 100°$ .

1. The value of angle

$∠A$ is

$°$ .

In the following figure

$DEF$ ,

$m =$ 142

$°$ .

2. The measure of angle

$x$ is

$°$ .

3. The measure of angle

$y$ is

$°$ .

$1$

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