Answer:
(a) x = 60°
(b) Angle x is alternate to the right base angle of the equilateral triangle.
Step-by-step explanation:
(a) The triangle in the figure above is an equilateral triangle in which all sides and angles are equal. The sum of angles in a triangle is 180°. Each angle in the equilateral triangle is 60° (180°/3 = 60°)
Therefore, angle x is 60°.
(b) Alternate angles are equal. Angle x and the right base angle of the equilateral triangle are alternate angles. Therefore, angle x is 60°.
