I genuinely have no clue how to do them
15 here and 15 on another post

Step-by-step explanation:

6. angle 1 = angle 4 = 60deg (vertically opposite angles)

7. angle 3 = 180 - 40 - 60 = 80deg (angles on a straight line are supplementary)

8. angle 5 = angle 2 = 40deg (vertically opposite angles)

9. angle 6 = angle 3 = 80deg (vertically opposite angles)

10. angle 7 = angle 5 + angle 4 = 40 + 60 = 100deg (alternate angles, //lines)

11. angle 8 = 180 - 100 = 80deg (angles on a str line are supplementary)

12. angle 9 = 180 - 80 - 40 = 60deg (angles in a triangle)

13. angle 10 = 180 - 60 = 120deg (angles on a str line are supplementary)

14. angle 11 = angle 9 = 60deg (vertically opp angles)

15. angle 12 = angle 10 = 120deg (vertically opp angles)

Topic: angles

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pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

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