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Sagot :
Answer:
Step-by-step explanation:
the sum of the angle is 90 degrees
x+2x+x+10=90
4x=90-10=80
4x=80
x=20
All 3 angles must add up to 90 degrees:
[tex]x + 2x +(x+10) = 90 \\~\\4x = 80 \\~\\x = 20[/tex]
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