Question 8 of 10 The line of symmetry divides a design so that every point on one side of the line a point on the other side of it. A. becomes B. is equal to C. is rotated to D. coincides with

Determine the lengths of the sides of \( \triangle A^{\prime} B^{\prime} C^{\prime} \).

Exercice 4 L'espace est rapporté à un repère \( (O ; i ; j ; k) \) On considère les points \( A(2 ; 3 ;-1), B(1 ; 3 ; 4), C(0 ; 1 ;-3), D(2 ; 0 ; 0) \) et \( E(-2 ;-2 ; 8) \) 1) Montrer que les points \( A, B \) et \( C \) définissent un plan. 2) Peut-on trouver deux réels \( a \) et \( b \) tels que : \( \overline{D E}=a \overline{A B}+b \overline{A C} \) 3) Que peut-on en déduire pour la dicite (DE) ?

Question \( \operatorname{In} \triangle N O \bar{N}, \overline{O P} \cong \overline{N O} \) and \( \mathrm{m} \angle O=57^{\circ} \). Find \( \mathrm{m} \angle N \). Answer Attempt iout of 2 \( \square \)

Queation In \( \triangle F G H, \overline{H F} \cong \overline{G H} \) and \( \mathrm{m} \angle G=58^{\circ} \). Find \( \mathrm{m} \angle F \). Answer Atempt a out of a

\( \left. \begin{array} { l } { \hat { \alpha } = 2 x - 18 ^ { \circ } } \\ { \hat { \beta } = 5 x - 5 ^ { \circ } } \end{array} \right. \)