Question

please answer step by step​

Answer 1

Answer:

Question no.1

x+x+10+x+20=180°. (because sum all angles of triangle is 180°)

3x+30=180

3x=180-30

3x=150

x=50

Question no.2

this is right angle triangle

90°+x+10+x-10=180

2x+90=180

2x=180-90

2x=90

x=45°

Step-by-step explanation:

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Answer 2

Answer:

1..... x + x + 20 + x + 10 = 180 (sum of all triangle is 180)

3x + 30 = 180

3x = 180 - 30

3x = 150

x = 150/3

x = 50

2.... 90 + x + 10 + x - 10 = 180 ( sum of all triangle is 180)

2x + 90 = 180

2x = 180 - 90

2x = 90

x = 90/2

x = 45

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