Question

1. Two angles of a quadrilateral are 80° and 135º. The other two angles are equal. Find the other two angles.​

Answer 1

Answer:The unknown angle , x = 72.5°

Step-by-step explanation:

The sum of all internal angles of quadrilateral = 360°

135° + 80° + x + x = 360°

2x = 360° - 145°

x = 72.5°

Answer 2

Answer:

the sum of all angles of a quadrilateral is 360 degree

let the other  angle bex

so , 80 +135 + x+x=360

215+2x=360

2x=360-215

2x=145

x=72.5

other two angles is 72.5

Step-by-step explanation:

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