Topic 5 Review - Relationships in Triangles

If CF = 5, CD = 12, and EF = 5, what is the perimeter of triangle CDE?

• 29

• 30

• 34

• 36

If  $m\angle XWY=20\degree,\ m\angle XWZ=40\degree,\ and\ XY=16$ , what is the value of YZ?

What is the value of FC?

• 63

• 4

• 6

• 9

Which statement(s) about the figure MUST be true? Select ALL that apply.

• n = 7

• QS = 21

• SR = 27

• QR = 54

In triangle JKL, what are PK and RJ?

• PK = 10, RJ = 6

• PK = 15, RJ = 9

• PK = 6, RJ = 10

• PK = 9, RJ = 15

Part 1: M is the centroid of triangle DEF.

DK, EL, and FJ are ____.

• Altitudes

• Angle Bisectors

• Medians

• Perpendicular Bisectors

Part 2: M is the centroid of triangle DEF.

What is EL?

• 9

• 4

• 3

• 12

Part 3: M is the centroid of triangle DEF.

Which equation relates DM to MK?

• $MK\ =\ \frac{1}{4}DK$

• $MK=\frac{1}{3}DK$
  

• $MK=\frac{1}{2}DK$
  

• $MK=\frac{2}{3}DK$
  

part 1: What is the value of

 $y$  ? Enter your answer in the box.

Part 2: What is the value of

 $m\angle DEF$  ? Enter your answer in the box.