Question

The third of angle 45°,90°=

Answer 1

Answer:45

Step-by-step explanation:In a Triangle

The sum of the measures of the angles are always 180°

.:45°+90°+X=180°

135°+X=180°

X=180°-135°

X=45°

Third angle is 45°

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Answer 2

Let’s consider x as third angle
45+90+x=180
X=180-135
X=45

This answer is in the case of triangle or straight angle only