In an isosceles triangle, ench base angle is four times its vertical angle. Find each angle of thetriangle20.21. The ratio between the base angle and the vertical angle of an isosceles triangle is 2:5. Find eachangle of the triangle.In the given figure, AABC is an equilateral triangle whose side BC has been produced idirections to D and E respectively. Prove that LACD2.LABE.

In an isosceles triangle, ench base angle is four times its vertical a

1.	In an isosceles triangle, ench base angle is four times its vertical angle. Find each angle of thetriangle20.21. The ratio between the base angle and the vertical angle of an isosceles triangle is 2:5. Find eachangle of the triangle.In the given figure, AABC is an equilateral triangle whose side BC has been produced idirections to D and E respectively. Prove that LACD2.LABE.
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