Consider the sets below. A{x|x is a polygon}
B {x|x is a triangle)
Which is true?
1.А СВ
2.BCA
3. Aᴄ= B
4.Bᴄ=A

4. Let the number of sides be n

As we know that sum of exterior angles of a regular polygon = 360°

Number of sides = Sum of exterior angles/Each interior angle

= 360°/24°

= 15

Hence, the regular polygon has 15 sides

10. Non-Perpendicular Intersecting Lines

When two lines intersect, they create vertical angles, sometimes called opposite angles, that are congruent.

Step-by-step explanation:

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x