B

D

A

C

Mesure les trois angles $\widehat{BAC},$$\widehat{CAD}$et$\widehat{DAB}$, puis coche la (ou les) bonne(s) réponse(s).

R2. CAD = 145°

R1. BAC = 118°

ok

R1. Angle BAC = 118°

R1

R2. Angle CAD = 145°

R3. Angle CAB = 102°

R4. Angle BAD = 33°

A = (11, -2)
B = Point(Circle[A, 10])
a = Segment(A, B)
B' = Rotate(B, 102°, A)
α = Angle(B, A, B')
b = Segment(B', A)
B'_1 = Rotate(B, 135°, A)
β = Angle(B, A, B'_1)
c = Segment(B'_1, A)
C = Point(a)
D = Point(b)
E = Point(c)
d = Segment(E, A)
e = Segment(D, A)
f = Segment(C, A)
i = true
g = false
h = true
j = false
k = false
l = false
m = false
γ = Angle(C, A, D)