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Find 3x

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Find 3x

Postby nycmath » Fri Oct 02, 2026 6:42 pm

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nycmath
 
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Re: Find 3x

Postby Eigenvalue » Fri Oct 02, 2026 9:33 pm

The interior angles of a triangle have a sum of 180°
60+70+x-40=180
130-40+x=180
90+x=180
x=90
3x=270°

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Re: Find 3x

Postby nycmath » Sat Oct 03, 2026 9:21 pm

Eigenvalue wrote:The interior angles of a triangle have a sum of 180°
60+70+x-40=180
130-40+x=180
90+x=180
x=90
3x=270°


Looks good.

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