please solve 1-26 with clear and short easy work and explanations

1.6 Practice 19. P Name: 16. Geometry The expressions (3x + 63) and (7x - 45) represent the measures of two angles of a regular decagon. Date: Find the measure of an angle of the decagon. Hour: 19 . Phenomena extraordinary , or (3 x+ 63) = 149 concave. Tell whether the figure is a polygon. If it is not, explain why. If it is a polygon, tell whether it is convex or person. out 17. The expressions -2x + 41 and 7x - 40 represent the lengths (in kilometers) of two sides of an equilateral pentagon. Find the length of a side of the pentagon. . Ignoramus /N -person Each figure is a regular polygon. Find the value of x. An utterly ignorant 18. 19. x2 - 12 Classify the polygon by the number of sides. Tell whether the polygon is equilateral, equiangular, or regular. Explain your reasoning. 2x0 4. 3 m 3 m 5 . Pentagon, (x+ 30) 2x2 - 61 earegular 3 m 3 m Quadralitera 20. 21. x2 - 2x + 8 14x2 + 8)0 thing / Adj showing skill 3 m regular ve 6. x2 + 8x - 52 74x2 + 2x - 210 or 7. ring ones ends vgon 22. The vertices of a figure are given below. Plot and connect the points so that they form a convex polygon. Classify the figure. Then show that the figure on is equilateral using algebra. A(3, 0), B (3, 6), C(2, 3), D (4, 3) gon on quar ongr Tell whether the statement is always, sometimes, or never true. equi' 8. A quadrilateral is convex. 9. An octagon is regular. 23. A picture frame with a wooden border is a regular triangle, as shown. You 10. A triangle is concave. 11. A regular polygon is equilateral. want to decorate the frame by wrapping a ribbon around it. How many feet of ribbon are needed to wrap the ribbon around the border one time? (7 * + 8) in. 12. A convex polygon is regular. 13. A square is convex. 14. A regular pentagon is equilateral 15. A regular heptagon is concave (3x + 16) in