## Parallelogram

The Parallelogram tool allows you to create a parallelogram by defining one side and then either its next side or its diagonal. You can use the Drag Constraints button to control the horizontal or vertical orientation of the sides or to define a vector to guide the drawing of the side. Here’s an example. Also, as with the other polygon tools, the Bezier Points button lets you specify the number of bezier points on each side. [Read More]

## Rectangle

The Rectangle tool offers several different ways to construct a rectangle. Corner to opposite corner Center to corner Corner to center Define one side with Mark Button and then drag to define other side Define dividing center line with Mark Button and then drag to define other side Define dividing center line from center with Mark Button and then drag to define other side You can use Drag Constraints for the last three options to restrict the sides horizontally, vertically, or freely (no constraints). [Read More]

## Regular Polygon

A Regular Polygon is a polygon where all its sides and angles are equal. There are four Regular Polygon tools, one for 3-12 sides, one for 13-32 sides, one for 33-64 sides, and one for 65-128 sides. This is simply for convenience to reduce the number of options during construction. The four tools work exactly the same. You can construct a regular polygon in the following ways. Center to side Side to center Center to vertex Vertex to center Mark side Mark half side (vertex then midpoint) Mark half side (midpoint then vertex) Vertex to opposite side or opposite vertex (depending on if the polygon has an even or odd number number of sides) Side to opposite vertex or oppsoite side (depending on if the polygon has an even or odd number number of sides) You can use the Drag Contraints button to control the horizontal and vertical orientation of the polygon. [Read More]

## Rhombus

The Rhombus tool lets you create a rhombus (a parallelogram with four equal sides) in three different ways Drag from one vertex to an opposite vertex, Mark it, drag to define the other sides Drag from the center to a vertex, Mark it, drag to define the other sides Drag from a vertex to the center, Mark it, drag to define the other sides You can use the Drag Constraints button to control the horizontal or vertical orientation of the sides. [Read More]

## Square

The Square tool allows you to create a square in several different ways. Corner to corner Center to corner Corner to center Center to midpoint of side Midpoint of side to center Midpoint of side to midpoint of opposite side Mark Side and drag to define which side the square falls on Corner to midpoint of side, mark, and then drag to define which side the square falls on Midpoint of side to corner, mark, and then drag to define which side the square falls on The construction mode button graphically shows each of these methods. [Read More]

## Star

The Star tool allows you to create conventional stars and also several different many-pointed shapes that we’ll loosely call Stars. Here are some examples. To draw a Star you need to define these things: inner radius outer radius the number of points whether or not the star is “twisted” First drag outward from the center (which is the initial touch point). You’ll see an outlined polygon showing you either where the points of the star will be placed or where inner corners of the star will be placed. [Read More]

## Trapezoid

The Trapezoid tool is actually very similar to the Parallelogram tool. It allows you to create an isosceles trapezoid (a trapezoid where the non-parallel sides are equal) by defining one of the parallel sides and then either its next non-parallel side or its diagonal. You can use the Drag Constraints button to control the horizontal or vertical orientation of the sides or to define a vector to guide the drawing of the side. [Read More]

## Triangle (Exact)

The Exact Triangle tool lets you specify in advance the exact angles of the triangle or the exact proportions of the sides of the triangle. You used the Exact Triangle selector for this. It’s displayed at the bottom of the Polygons tab when this tool is selected. There are two dropdown boxes. One allows you to choose between Angles or Proportions. The other allows you to select a particular triangle from that group. [Read More]

## Triangle (Free)

The Free Triangle tool allows you to construct a triangle by precisely placing its three vertices. The initial touch defines the first vertex. While keeping your finger on the screen, drag it to another location and press the Mark Button. This defines the second vertex of the triangle. The last vertex is set where you lift your finger from the Paper. You can restrict the construction of the vertices using the Drag Constraint button (move freely, move horizontally, move vertically). [Read More]