The three angles of the quadrilateral are 55°, 65°, and 105°. What is the fourth angle ?
A
125°
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
105°
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
135°
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
115°
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is C 135° The sum of four angles of a quadrilateral is 360°.
The sum of given three angles = 55° + 65° + 105° = 225°
Therefore, the fourth angle = 360° - 225° = 135°
Hence the correct answer is Option A - 135°