Respuesta :

Answer:

90 degrees

Step-by-step explanation:

the 110 angle+the inside angle will be 180 degrees, so 180-110=70. The other triangle has the same angle, since the bisector will create a side that is the same, it proves how the triangle are the same, and the bisector creates a 90 degree angle, or a right angle.

The value of angle y is 90°

How to find required base angle in a triangle -

First we are mentioning the respective points in the following diagram .

Let the point containing angle 110° be B , containing angle x° be A , containing angle y° be D and containing angle 70° be C .

Using the properties of triangle -

We know that the sum of interior angle and exterior angle subtending in a base of a straight line is always 180°.

Thus , the interior angle of B is 180° - 110° = 70°

Also we know that the sum of the interior angles of a triangle is always 180°.

Considering triangle ΔABC ,

⇒  2x° + 70° + 70° = 180°

⇒  2x° = 40°

∴   x = 20°

Now using the same property that the sum of the interior angles of a triangle is 180°,

Considering triangle ΔABD ,

⇒ x° + 70° + y° = 180°

⇒ 20° + 70° + y° = 180°

∴  y = 180° - 90° = 90°

Thus the value of angle y is 90°

To learn more about properties of triangle, refer -

https://brainly.com/question/13428505

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