Understanding the Perpendicular Bisector

The video tutorial addresses the problem of the mediatriz, focusing on segment DH, which acts as an altitude, median, and bisector. The tutorial involves calculating angles in an isosceles triangle, where specific angles are given, and the properties of the triangle are used to determine unknown angles. The conclusion involves calculating angle X, which is found to be 60 degrees.

What is the role of segment DH in the problem?

• It acts as a perpendicular bisector.

• It acts as a median.

• It acts as an altitude.

• It acts as a tangent.

If one side of the isosceles triangle is 9 cm, what is the length of the other side?

• 8 cm

• 9 cm

• 10 cm

• 11 cm

What is the sum of the angles in the isosceles triangle?

• 150 degrees

• 200 degrees

• 160 degrees

• 180 degrees

What is the value of the unknown angle x?

• 70 degrees

• 60 degrees

• 80 degrees

• 50 degrees

If the upper angle of the isosceles triangle is 80 degrees, what is the sum of the two base angles?

• 80 degrees

• 100 degrees

• 160 degrees

• 200 degrees