Measuring Lengths and Coordinates

The video tutorial explains how to measure the length of a segment using a ruler, plot points on a coordinate plane, and determine the congruence of segments. It also covers the segment addition postulate to find segment lengths and calculates the distance between cities using this postulate.

What is the first step in measuring the length of segment AB using a ruler?

• Use a protractor

• Align the ruler with point B

• Align the ruler with point A

• Estimate the length visually

If point A is at coordinate 2 and point B is at 4.6, what is the length of segment AB?

• 2.4 cm

• 2.6 cm

• 4.6 cm

• 6.2 cm

What is the absolute value of the difference between coordinates used for?

• To find the slope

• To find the midpoint

• To find the area

• To find the length of a segment

How do you plot point P(-4, 3) on a coordinate plane?

• 4 units right, 3 units up

• 4 units right, 3 units down

• 4 units left, 3 units up

• 4 units left, 3 units down

What is the length of segment PQ if P is at (-4, 3) and Q is at (3, 3)?

• 8 units

• 7 units

• 4 units

• 3 units

What is the length of segment RS if R is at (-1, 4) and S is at (-1, -2)?

• 4 units

• 5 units

• 6 units

• 7 units

Are segments PQ and RS congruent?

• No, they are not congruent

• They are perpendicular

• Yes, they are congruent

• They are parallel

What does the segment addition postulate state?

• The sum of the coordinates equals the length of the segment

• The sum of the lengths of two segments equals the length of the third segment

• The sum of two segments is always greater than the third

• The sum of the angles in a triangle is 180 degrees

If segment XY is 14 and YZ is 27, what is the length of XZ?

• 27

• 13

• 14

• 41

If segment BC is 19 and BD is 25, what is the length of CD?

• 9

• 6

• 7

• 8