Question

three angles of a quadilateral measures 68°,74°and 108° respectively. Find the measure of the fourth angle​

Answer 1

Given

• 1st angle = 68°
• 2nd angle = 64°
• 3rd angle = 108°
• 4th angle = ?

Explanation

✰ As We know that :-

Sum of all angles of the Quadrilateral is 360° .

Then,

Suppose the Fourth angle of the Quadrilateral be x

✰ According to Question:

➟ (1st + 2nd + 3rd + 4th) = 360°

➟ (68° + 64° + 108° + x) = 360°

➟ (240° + x) = 360°

➟ x = 360° - 240°

➟ x = 120°

Hence,

• The Fourth angle of the Quadrilateral will be 120° .