Parallel Perpendicular Real Life

Find the length of AB

• 9

• 12

• 13

• 15

If a triangle within a triangle has base lines that are parallel, the two triangles MUST be similar because their three angles are all congruent. Angles D and B as well as E and C are congruent because they are corresponding angles on parallel lines. Angle A is a reflexive angle.

Since the triangles are similar that means the corresponding sides must be:

• 6

• 8

• 7.2

• 6.8

Select ALL ratios that are true.

If a line divides two sides of a triangle proportionally, then it is .......

• congruent to the third side.

• parallel to the third side

• perpendicular to the third side.

• twice the length of the third side

• 8

• 5

• 6

• 4

Determine whether $\overline{QR}\parallel\overline{ST}$

• Yes, the lines are parallel

• No, the lines are not parallel

Answer explanation

The lines are parallel because the corresponding sides are proportional. Either 22/27 = 35.2/43.2 or 35.2/8 = 22/5 or 8/5 = 35.2/22

Find the missing length indicated.

• 30

• 25

• 45

• 50

Find the value of x.

• 10

• 35

• 8

• None of these

• Parallel

• Perpendicular

• Neither