Triangle Vocabulary

Triangle Vocabulary

Angle Measures

Isosceles Triangles

Special Segments

Wild Card

100

What kind of triangle has zero congruent angles?

Scalene

100

Which type of special segment of a triangle does not have a point of concurrency?

Midsegment

200

What are the congruent sides of an isosceles triangle called?

Legs

200

Where is the centroid of an obtuse triangle located?

Inside the triangle

300

What is the name of the point of concurrency for altitudes?

Orthocenter

300

When is an orthocenter located on the triangle?

When the triangle is right.

400

When can the centroid of a triangle be located outside of the triangle?

Never

400

Any point on a/an ________________ is equidistant from the sides of the angle.

Angle bisector

500

What are the two types of special segments of triangles that could possibly be concurrent outside of the triangle?

Altitudes and Perpendicular Bisectors

500

The vertex angle of isosceles ∆DEF is ∠D. If m∠E = 8x – 2, and m∠F = 10x – 8, what is m∠D?

m∠D = 136˚

500

What point is located 2/3 of the distance from the vertex of a triangle to the midpoint of the opposite side?

Centroid