If the angle formed by the bisector of the vertex angle of an isosceles triangle equals 50 degrees, find a base angle

Step-by-step explanation:

You have an angle bisector at 50°, therefore having an isosceles triangle with two congruent sides and base angles, This is where we use the Triangular Interior Angles Theorem. We know that adding 130° to 50° gives us 180° altogether because the sum of the interior angles in a triangle always 180°. Now, onward with this:

Since we have TWO base angles, we must take half of 130° to get the measure of both angles separately.

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step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.