Question

Two angles of a triangle are 30° and 80°. Find the third angle.

Answer 1

Answer:

if two angles are given then we find third angle by Angle Sum Property

let angle be x

then x + 30 +80= 180°

x+110=180

x=180- 110

x= 70°

Answer 2

$\huge \bf{ \boxed{ \underline{ \red{ \tt{answer \: }}}}}$

$\rm \blue{70}$

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$\sf \huge \underline{Question}$

Two angles of a triangle are 30° and 80°. Find the third angle.

__________________________________________

$\sf \huge \underline \pink{to \: find}$

• Third angle = ?

$\sf \huge \underline \purple{Answer}$

• Given two angles of a triangle are 30 and 80

• third angle = ?

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$\rm \blue{we \: know \: that \: angle \: of \: triangle \: is \: 180}$

$\tt \implies \green{let \: take \: third \: angle \: be \: x}$

then,

$\tt \implies \purple{30 + 80 + x = 180}$

$\tt \implies \orange{110 + x = 180}$

$\tt \implies \pink{x = 180 - 110}$

$\tt \implies \red{x = 70}$

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$\bf{ \boxed{ \underline{ \blue{ \tt{third \: angle \: is \: 70 \: }}}}}$