Question

the measure of two angles of a triangle are 72 degree and 55 degree find the measure of the third angle​

Answer 1

Given :

• 1st Angle of Triangle = 72°
• 2nd Angle of Triangle = 55°

To Find :

• Find the 3rd Angle

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SolutioN :

◕ We know That :

• Sum of Angles(Triangle) = 180°

◕ Calculating the 3rd Angle :

$➳ \qquad \;$ ∠1 + ∠2 + ∠3 = 180°

$\\ ➳ \qquad \;$ 72° + 55° + ∠3 = 180°

$\\ ➳ \qquad \;$ 127° + ∠3 = 180°

$\\ ➳ \qquad \;$ ∠3 = 180° - 127°

$\\ ➳ \qquad \; \red{\underline{\underline{\sf{ ∠3 = 53° }}}}$

◕ Therefore :

3rd Angle of the Triangle is 53° .

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Answer 2

x+72+55= 127

x+127=180

x=180-127

x= 53