Relationships in Triangles

Name the smallest angle in this triangle.

• ∠A

• ∠B

• ∠C

Two sides of a triangle have side lengths of 17 meters and 12 meters.  What is the range of possible lengths for the third side?

• 12 < x < 17

• 12 < x < 29

• 5 < x < 17

• 5 < x < 29

Give the sides in order from least to greatest.

• MK, KL, LM

• MK, LM, KL

• KL, LM, MK

• LM, KL, MK

List the sides of ΔKLM in order from greatest to least if m∠K = 4x+20, m∠L = 2x+10, and m∠M = 3x-20.

• KL, KM, LM

• KL, LM, KM

• LM, KL, KM

• LM, KM, KL

Which of the following words describes the point shown in the figure?

• Centerpoint

• Orthocenter

• Centroid

• Altitude-point

Which of the following angles are remote interior angles to angle d?

• Angle a and Angle b

• Angle b and Angle c

• Angle a and Angle c

• Angle a and Angle b and Angle c

Which of the following describes a median of a triangle?

• A. A middle of the triangle.

• B. A segment with endpoints at the vertex and midpoint of the opposite side.

• C. A segment that connects two midpoints of two sides.

Which of the following describes an altitude of a triangle?

• A segment that passes through the middle of the triangle.

• A segment with endpoints at the vertex and midpoint of the opposite side.

• A segment that connects two midpoints of two sides.

• A segment that connects the vertex and the opposite side at 90 degrees. 

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

• angle bisector

• perpendicular bisector

• median

• midsegment

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

• altitude 

• perpendicular bisector

• midsegment

• angle bisector