Question

Help!!
find the unknown sizes of angles of figure​

Answer 1

60°

Explanation:

it looks like an isosceles triangle, 2 equal side and 2 equal angles (F&E)

the sum of the interior angles in a triangle is 180°, and FH is 180°.

180 - 120 = 60° (angle G)

now we know that it is an equilateral triangle, so Y and 2x are 60°

(3 * 60 = 180°)

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or

180 - 60 = 120

120 : 2 = 60°