Question

two vertical opposite angles measure 3 X + 40 and X + 90 what is the value of x and measure​

Answer 1

vertically opposite angles are equal

3x+40=x+90

3x-x=90-40

2x=50

x=25

Answer 2

Step-by-step explanation:

Vertically opposite angles are of same measure .

Therefore,

3x+40=x+90

3x-x=90-40

2x=50

x= 25

x=25

Proof:-

3x+40

= 3*25+40

=75+40

=115

x+90

=25+90

=115

115=115

Hence proved