Proportional Parts Triangles

If AC=42, find DF

• 21

• 84

• 14

• 28

QR is a midsegment of triangle BCD. Solve for the value of x.

• 11

• 18

• 9

• -7

QR is a midsegment of triangle WXY. What is the length of segment WY?

• 3

• 6

• 9

• 12

QR is a midsegment of triangle WUV. What is the length of segment QR?

• 4

• 8

• 16

• 32

In triangle ABC, DE || CB. If AC = 30, AD = 10, AE = 22, and EB = x+4, find x.

Mathematical Equivalence

ON

Tags

GM.2

GSRT.4

GSRT.4a

GSRT.4b

GSRT.5

If a line divides two sides of a triangle proportionally, the line must be ___________ to the third side of the triangle.

Find x.

Mathematical Equivalence

ON

Tags

GM.2

GSRT.4

GSRT.4a

GSRT.4b

GSRT.5

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

Two triangles are similar, and the ratio of each pair of corresponding sides is 2:1. Which statement regarding the two triangles is not true?

• Their areas have a ratio of 4:1

• Their altitudes have a ratio of 2:1

• Their perimeters have a ratio of 2:1

• Their corresponding angles have a ratio of 2:1

Is DE parallel to BC?

• Yes

• No