139k views
0 votes
AB || CD. Find the measure of

AB || CD. Find the measure of-example-1

2 Answers

3 votes

Explanation:

solve the equation:

5x-10=4x+20

User Jim Blizard
by
7.1k points
7 votes

Answer:

The correct answer is option B. 140

Explanation:

From the figure we can see that,

AB ║ CD

To find the value of x

From the figure we can see that,

<CFE = <BEF [Alternate interior angles are equal]

4x + 20 = 5x - 10

5x - 4x = 20 + 10

x = 30

To find the measure of <BEF

m<BEF = 5x - 10

= (5*30) - 10

= 150 - 10

= 140°

Therefore the correct answer is option B. 140

User Trufa
by
7.0k points