Question

If two angles in a triangle are 72 and 45, then what is the third angle in a triangle

Answer 1

Given,
Angle 1 =72°
Angle 2=45°
To find,
Angle 3
ATQ,
Angle 1+angle 2+angle 3=180°
72°+45°+angle 3=180°
angle 3=180°-117°
angle 3=63°

Hope this helps you!

Answer 2

Here is your answer

Let the third angle is x

SUM OF ALL ANGLE OF A TRIANGLE IS 180

$72 + 45 + x = 180 \\ 117 + x = 180 \\ x = 180 - 117 \\ x = 63$
Third angle is 63

Hope it helps you