1. Calculator

    Taking 1+2 as an example, first input 1+2, then click Compute button , you will get the calculated results 3 in the next line with calculated result identifier >>>.

  2. Geometric sketchpad

    • Select or move the geometry

      Drag coordinate system

      Delete the selected geometry

      Clear

    • Point

      Select two points to create midpoint

      Separation of attachment point from parent object

    • Create segment with two points

      Fixed length line:select a point and enter the length of the segment

      Create line with two points

      Create ray with two points

      Create vector with two points

      Polyline:select all the vertices in turn, then click the first point

    • Perpendicular line:select a point and a straight line to be vertical

      Perpendicular bisector line:select two points or a line segment

      Parallel line:select a point and a line to parallel

      Equal vector:select a point and a vector to parallel

      Angle bisector:select three points or two straight lines

      Tangent line:select a point and a circle

      Polar line:select a point and a circle

    • Polygon:select all the vertices in turn, then click the first point

      Regular polygon:select two points and enter vertex number

    • Circle:select center point of the circle and a point in circlein turn

      Circle:select not three points on the same line

      Compasses:select a point to determine the center of the circle and a segment to determine the radius of the circle

      Semicircle arc:select two points,draw from the starting point to the end of the counter clockwise

      Circular arc:select the center,the starting point,the end point in turn,draw from the starting point to the end of the counter clockwise

      Circular arc:select not three points on the same line

      Circular sector:select the center,the starting point,the end point in turn

      Circular sector:select not three points on the same line

    • Measure

      Coordinate

      Equation

      Length

      Distance

      Angle

      Slope

      Perimeter

      Area

      Radius

      Arc Length