Question

prove that the sum of the angeles of aquadrilateral is. 360​

Answer 1

Answer:

sjdjfjfxkkgk

Step-by-step explanation:

I dont nodmdd. dkkdmmnnfngnfnd

Answer 2

Step-by-step explanation:

Given

a quadrilateral

To prove

the sum of all angles of quadrilateral is 360°

solution

Quadrilateral has four interior angles

a , b ,c ,d

sum of adjacent angles of quadrilateral is equal to 180°

therefore,

a+b=180° _________(1)

b+c= 180° _________(2)

c+d=180° __________(3)

a+d=180° __________(4)

adding all the equations

a+b+b+c+c+d+a+d = 180°+180° + 180° + 180°

2a+2b+2c+2d= 720°

2( a+b+c+d) = 720°

a+b+c+d= 720°÷2

a+b+c+d = 360°