Construction in GCLC language
dim 120 120
point A 80 95
point H_{b} 89.36 77.83
point H_{c} 68.91 84.83
color 220 0 0
fontsize 11
cmark_t A
cmark_rt H_{b}
cmark_lt H_{c}
color 0 0 0
fontsize 10
% DET: points A and H_{b} are not the same
% Constructing a line b which passes through point A and point H_{b}
line b A H_{b}
color 200 200 200
drawline b
color 0 0 0
% DET: points A and H_{c} are not the same
% Constructing a line c which passes through point A and point H_{c}
line c A H_{c}
color 200 200 200
drawline c
color 0 0 0
% Constructing a line h_{b} which is perpendicular to line b and which passes through point H_{b}
perp h_{b} H_{b} b
color 200 200 200
drawline h_{b}
color 0 0 0
% NDG: lines h_{b} and c are not parallel% DET: lines h_{b} and c are not the same
% Constructing a point B which belongs to line h_{b} and line c
intersec B h_{b} c
cmark_b B
% Constructing a line h_{c} which is perpendicular to line c and which passes through point H_{c}
perp h_{c} H_{c} c
color 200 200 200
drawline h_{c}
color 0 0 0
% NDG: lines h_{c} and b are not parallel% DET: lines h_{c} and b are not the same
% Constructing a point C which belongs to line h_{c} and line b
intersec C h_{c} b
cmark_b C
drawsegment A B
drawsegment A C
drawsegment B C
% Non-degenerate conditions: lines h_{c} and b are not parallel; lines h_{b} and c are not parallel
% Determination conditions: lines h_{c} and b are not the same; lines h_{b} and c are not the same; points A and H_{c} are not the same; points A and H_{b} are not the same