Question

plz answer if you know correctly the answer

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Answer 1

Answer:

these two are equilateral triangles

then all the sides and all angles of these triangles are equal

< A + <B + <C = 180° ( equilateral triangle)

AB = AC = BC = 6 cm

so <A = 3x = 60°

x = 60/3

x = 20

<A' + <B' + <C' = 180° (equilateral triangle)

so <A' = 2x+20= 60°

2x = 60-20

x = 40/2

x = 20°

<A' + <B' + <C' = 180°

60°+60°+<C'=180°

<C'=180-120

<C'=60°