Question

the
measures of two angles of a
triangle are 60° and 78° lind the
measure of third angle.​

Answer 1

Sum of angles in a triangle = 180 degrees

Let the third angle be x

therefore ,

60+78+x = 180

x = 180-138

x= 42 degrees

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Answer 2

Answer:

$\huge\sf\orange{Question}$

the measures of two angles of a triangle are 60° and 78° find the measure of third angle.

$\huge\sf\orange{Answer}$

$\sf\pink{given}$

• Measure of first angle = 60°

• Measure of second angle = 78°

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

• let the measure of third angle be x

By angle sum property of triangle ,

Sum of all angles of triangle = 180°

➡️ 60 + 78 + x = 180

➡️ 138 + x = 180

➡️ x = 180 - 138

➡️ x = 42°

• Therefore , measure of third angle is 42°