Free Printable Special Triangle Vocabulary (Ch. 5)

1.

A segment in triangle connecting two midpoints.

a)

median

b)

midpoint

c)

midsegment

d)

middle

2.

A segment from the midpoint to the opposite vertex.

a)

midsegment

b)

median

c)

altitude

d)

perpendicular bisector

3.

A segment that bisects one of the sides of the triangle and forms a right angle with that side. (Goes thru the midpoint and perpendicular to the side.)

a)

midsegment

b)

perpendicular bisector

c)

altitude

d)

midpoint

4.

A segment from the vertex that is perpendicular to the opposite side or to the line containing the opposite side.

a)

altitude

b)

perpendicular bisector

c)

angle bisector

d)

median

5.

A segment that bisects one of the angles of the triangles.

a)

altitude

b)

median

c)

perpendicular bisector

d)

angle bisector

6.

The point of concurrency of the medians.

a)

centroid

b)

circumcenter

c)

incenter

d)

orthocenter

7.

The point of concurrency of the angle bisectors

a)

centroid

b)

circumcenter

c)

incenter

d)

orthocenter

8.

The point of concurrency of the perpendicular bisectors.

a)

centroid

b)

circumcenter

c)

incenter

d)

orthocenter

9.

The point of concurrency of the altitudes.

a)

centroid

b)

circumcenter

c)

incenter

d)

orthocenter

10.

The midpoint formula is

a)

$\frac{y_2-y_1}{x_2-x_1}$

b)

$\left(\frac{x_1-x_2}{2},\frac{y_1-y_2}{2}\right)$

c)

$\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)$

d)

$\sqrt[]{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}$

11.

The slope formula is

a)

$\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)$

b)

$\left(\frac{x_1-x_2}{2},\frac{y_1-y_2}{2}\right)$

c)

$\frac{y_2-y_1}{x_2-x_1}$

d)

$\frac{y_2+y_1}{x_2+x_1}$

e)

$\frac{x_2-x_1}{y_2-y_1}$

12.

The distance formula is

a)

$\sqrt[]{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}$

b)

$\sqrt[]{\left(x_2+x_1\right)^2-\left(y_2+y_1\right)^2}$

c)

$\sqrt[]{\left(x_2-x_1\right)^2-\left(y_2-y_1\right)^2}$

d)

$\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)$

13.

____ is two-thirds the distance from each vertex to the midpoint of the opposite side.

a)

centroid

b)

circumcenter

c)

incenter

d)

orthocenter

14.

Contains the centroid, the orthocenter, and the circumcenter.

a)

Euler Line

b)

middle

c)

point of concurrency

d)

incenter

15.

____ is equidistant from the three sides of the triangle.

a)

centroid

b)

circumcenter

c)

incenter

d)

orthocenter

16.

____ is equidistant from the vertices of the triangle.

a)

centroid

b)

circumcenter

c)

incenter

d)

orthocenter

17.

When lines intersect in a single point.

a)

concurrent

b)

middle

c)

Euler Line

d)

slope

18.

a)

midsegment

b)

median

c)

perpendicular bisector

d)

angle bisector

e)

altitude

19.

a)

midsegment

b)

median

c)

perpendicular bisector

d)

angle bisector

e)

altitude

20.

a)

midsegment

b)

median

c)

perpendicular bisector

d)

angle bisector

e)

altitude

21.

a)

midsegment

b)

median

c)

perpendicular bisector

d)

angle bisector

e)

altitude

22.

a)

midsegment

b)

median

c)

perpendicular bisector

d)

angle bisector

e)

altitude

Special Triangle Vocabulary (Ch. 5)

Total questions: 22

Worksheet time: 22mins

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