Find the angle of X.
Answer
75 degrees
Solution
∠CAE = ∠DAB ＝ 15 degrees
X=∠CAE + ∠AED ＝ 15 ＋ 60 ＝ 75 degrees
Math New Drill (Level 1) : Geometry (Plane figure) Problem1(6) JOSAIKAWAGOE-2014
Equilateral triangle ABC is rotated counterclockwise by 15 degrees around the vertex A as a rotation center to be ADE as shown in a figure below.
Find the angle of X.
Answer
75 degrees
Solution
∠CAE = ∠DAB ＝ 15 degrees
X=∠CAE + ∠AED ＝ 15 ＋ 60 ＝ 75 degrees
Find the angle of X.
Answer
75 degrees
Solution
∠CAE = ∠DAB ＝ 15 degrees
X=∠CAE + ∠AED ＝ 15 ＋ 60 ＝ 75 degrees
