I already find a way to create the right side triangle

here is the code for anyone want to create a right side triangle:

```
using Plots, LaTeXStrings
pyplot()
import Base: isequal, ==
abstract type GeoObject end
abstract type GeoShape <: GeoObject end
struct Point <: GeoObject
x::Number
y::Number
end
(==)(p1::Point, p2::Point) = p1.x==p2.x && p1.y==p2.y
struct Triangle <: GeoShape
A::Point
B::Point
C::Point
end
Triangle(ax, ay, bx, by, cx, cy) = Triangle(Point(ax, ay), Point(bx, by), Point(cx, cy))
(==)(t1::Triangle, t2::Triangle) = vertices(t1) == vertices(t2)
function vertices(tri::Triangle)
[tri.A, tri.B, tri.C]
end
struct Edge <: GeoShape
src::Point
dst::Point
end
function edges(tri::Triangle)
elist = Edge[]
pts = vertices(tri)
for i in 1:length(pts)-1
push!(elist, Edge(pts[i], pts[i+1]))
end
push!(elist, Edge(pts[length(pts)], pts[1]))
elist
end
struct Circle
center::Point
radius::Number
end
(==)(c1::Circle, c2::Circle) = c1.center == c2.center && c1.radius == c2.radius
ccenter(c::Circle) = c.center
A = Point(2,2); B = Point(6, 2); C = Point(6,5);
tri = Triangle(A, B, C)
function shape(ptlist::Vector{Point})
xlist = [pt.x for pt in ptlist]
ylist = [pt.y for pt in ptlist]
shape = Shape(xlist, ylist)
end;
shape(tri::Triangle) = shape(vertices(tri));
trishape=shape(tri)
s1 = L"\theta";
s2 = L"sin \ \theta = \frac{opp}{hyp}";
s3 = L"cos \ \theta = \frac{adj}{hyp}";
s4 = L"tan \ \theta = \frac{opp}{adj}";
plot(trishape, leg=false, fill=(0, :green), aspect_ratio=:equal, fillalpha= 0.2)
scatter!(trishape.x, trishape.y, color=:red)
annotate!([(2.3, 2.1, (s1, 14, :red)),
(4, 2.1, ("adj", 10, :red)),
(6.2, 3.1, ("opp", 10, :red)),
(4, 3.7, ("hyp", 10, :red)),
(2.2, 4.5, (s2, 10, :red)),
(2.9, 4.5, (s3, 10, :red)),
(3.6, 4.5, (s4, 10, :red))])
```

and for the unit circle:

```
using Plots
pyplot()
function circleShape(h, k, r)
θ = LinRange(0, 2*π, 500)
h .+ r*sin.(θ), k .+ r*cos.(θ)
end
plot(circleShape(0, 0, 1), seriestype = [:shape,], lw = 0.5,
c =:blue, linecolor = :black,
legend = false, fillalpha = 0.2, aspect_ratio = 1, showaxis = false)
plot!([0], seriestype="vline", color=:green, label="")
plot!([0], seriestype="hline", color=:green, label="")
annotate!([(1.1,0, ("x", 10, :red)),
(0.15,1.03, ("y", 10, :red)),
(1.15,-0.1, ("A(1,0)", 10, :red)),
(0.1,-0.1, ("(0,0)", 10, :red)),
(0.51,0.95, ("(x,y)", 10, :red))])
scatter!([0.50], [0.866025404], color = "red", label="", markersize = 5)
```