Question

abcd is a parallelogram if a = (5x + 5) ° and b = (4x -5) ° find the value if x and the measures​

Answer 1

Step-by-step explanation:

since it is a //gm opposite angles will be

equal

and also angle A+angle B+angle C+angle D=360

i.e., (5x+5)+(4x-5)+(5x+5)+(4x-5)=360

⇒5x+4x+5x+4x=360

⇒18x=360

⇒x=20

so the angels are,

Angle A=5(20)+5=105

Angle B=4(20)-5-75

Angle C=105

Angle D=75

Answer 2

thus, angle x=20°, angle y=75° , angle z=105°