Isosceles Triangles and Bisectors

A triangle with two congruent sides and two congruent angles (base angles) is called ...

• scalene

• equilateral

• isosceles

• obtuse

What is the missing piece of information required to prove these triangles congruent?

• QY ≅ QY

• NY ≅ PY

• ∠N ≅ ∠P

• QY is the perpendicular bisector

The cente of the circumscribed circle in any triangle is the intersection of the

• median lines

• heights

• angle bisectors

• perpendicular side bisectors

Which would be the best classification for the triangle shown?

• acute isosceles

• obtuse scalene

• obtuse isosceles

• acute scalene

If m<LJK = 28°, what is m<MLK?

• 56

• 112

• 62

• 124

Segment AD is ________.

• a perpendicular segment

• a median 

• an angle bisector

• an altitude

The INCENTER is the intersection of which special segments?

• Angle Bisectors

• Perpendicular Bisectors

• Medians

• Altitudes

The figure is an example of a(n) ...

• angle bisector

• perpendicular bisector

• median

• altitude

The figure is an example of a(n) ...

• altitude

• perpendicular bisector

• median

• angle bisector

The CIRCUMCENTER is the intersection of which special segments?

• Angle Bisectors

• Perpendicular Bisectors

• Medians

• Altitudes