# In an isosceles triangle ABC, the median to the AC rigging is drawn. On this median point D is chosen so that

May 30, 2021 | education

| **In an isosceles triangle ABC, the median to the AC rigging is drawn. On this median point D is chosen so that the ADB angle is 130 degrees. Find the corner of the BDC.**

Let us prove the equality of the triangles AВD and СВD.

Since the triangle ABC is isosceles, then AB = BC. The median BH is also the bisector of the ABC angle, then the ABD = CBD angle. The segment BD is common for triangles, then triangles ABD and CBD are equal on two sides and the angle between them. Then the angle BDC = ADB = 130.

Answer: The BDC angle is 130.

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