Geometry Problems 221-230: Isosceles, Equilateral triangle, Trapezoid, Regular Polygon, Viviani's theorem, Altitude, Distances, Apothem, Centroid, Midpoint, Perpendicular, Transversal.

Proposed Problem 221. Viviani's theorem, Equilateral triangle, Interior point, Altitude, Distances.

Proposed Problem 222. Viviani's theorem, Equilateral triangle, Exterior point, Altitude, Distances.

Proposed Problem 223. Viviani's theorem, Isosceles triangle, Altitude, Distances.

Proposed Problem 224. Viviani's theorem, Isosceles triangle, Altitude, Distances, Point on the extension of the base.

Proposed Problem 225. Viviani's Theorem Extension, Regular Polygon, Apothem, Distance.

Proposed Problem 226. Triangle, Centroid, Perpendicular lines.

Proposed Problem 227. Triangle, Centroid, Exterior line, Perpendicular lines.

Proposed Problem 228. Triangle, Midpoints, Exterior line, Perpendiculars lines.

Proposed Problem 229. Triangle, Centroid, Transversal, Perpendicular lines.

Proposed Problem 230. Triangle, Midpoints, Transversal, Perpendicular lines.

Puzzle Geometry Problems 221 - 230.
22 Piece Polygons.