### Learning Math and Coding with Robots

 Grid: Tics Lines: Width px Hash Lines: Width px Labels: Font px Trace Lines: Robot 1: Width px Robot 2: Width px Robot 3: Width px Robot 4: Width px
 Axes: x-axis y-axis Show Grid Grid: 24x24 inches 36x36 inches 72x72 inches 96x96 inches 192x192 inches Quad: 4 quadrants 1 quadrant Hardware Units: US Customary Metric
 Background:

#### Robot 1

 Initial Position: ( in, in) Initial Angle: deg Current Position: (0 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

#### Robot 2

 Initial Position: ( in, in) Initial Angle: deg Current Position: (6 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

#### Robot 3

 Initial Position: ( in, in) Initial Angle: deg Current Position: (12 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

#### Robot 4

 Initial Position: ( in, in) Initial Angle: deg Current Position: (18 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

Draw an Umbrella in the Rain
Problem Statement:
The pre-placed blocks will draw part of the umbrella. Edit the first loop so instead of 2 light blue circles, 5 circles are drawn to create the bottom edge of the umbrella. The raindrops are currently circles. Add triangles on the top halves of the circles to create the proper raindrop shape.
```/* Code generated by RoboBlockly v2.0 */
#include <chplot.h>
double i;
double j;
double x;
double y;
CPlot plot;

plot.backgroundColor("#ccffff");
plot.noStrokeColor();
plot.fillColor("red");
plot.arcSector(18, 14, 10, 0, 180);
plot.fillColor("#ccffff");
for(i = 1; i <= 5; i++) {
plot.circle(6 + 4 * i, 14, 4);
}
plot.strokeColor("black");
plot.line(18, 18, 18, 10);
plot.arc(19.5, 10, 1.5, 180, 360);
plot.line(18, 24, 18, 25);
plot.noStrokeColor();
plot.fillColor("#3366ff");
for(j = 1; j <= 25; j++) {
x = randint(1, 35);
y = randint(1, 35);
plot.circle(x, y, 0.4);
plot.triangle(x + 0.4, y, x - 0.4, y, x, y + 0.7);
}
plot.strokeColor("black");
plot.text("Rain, rain go away!", PLOT_TEXT_LEFT, 4, 30);
plot.grid(PLOT_OFF);

plot.axisRange(PLOT_AXIS_XY, 0, 36);
plot.ticsRange(PLOT_AXIS_XY, 6);
plot.sizeRatio(1);
plot.plotting();```
```/* Code generated by RoboBlockly v2.0 */
#include <chplot.h>
double i;
double j;
double x;
double y;
CPlot plot;

plot.backgroundColor("#ccffff");
plot.noStrokeColor();
plot.fillColor("red");
plot.arcSector(18, 14, 10, 0, 180);
plot.fillColor("#ccffff");
for(i = 1; i <= 5; i++) {
plot.circle(6 + 4 * i, 14, 4);
}
plot.strokeColor("black");
plot.line(18, 18, 18, 10);
plot.arc(19.5, 10, 1.5, 180, 360);
plot.line(18, 24, 18, 25);
plot.noStrokeColor();
plot.fillColor("#3366ff");
for(j = 1; j <= 25; j++) {
x = randint(1, 35);
y = randint(1, 35);
plot.circle(x, y, 0.4);
plot.regularPolygon(x, y + 0.4, 3, 0.4, 0);
}
plot.strokeColor("black");
plot.text("Rain, rain go away!", PLOT_TEXT_LEFT, 4, 30);
plot.grid(PLOT_OFF);

plot.axisRange(PLOT_AXIS_XY, 0, 36);
plot.ticsRange(PLOT_AXIS_XY, 6);
plot.sizeRatio(1);
plot.plotting();```
 Blocks Save Blocks Load Blocks Show Ch Save Ch Workspace
Problem Statement:
The pre-placed blocks will draw part of the umbrella. Edit the first loop so instead of 2 light blue circles, 5 circles are drawn to create the bottom edge of the umbrella. The raindrops are currently circles. Add triangles on the top halves of the circles to create the proper raindrop shape.

Time