Ratio and proportion in geometry II

Ratio and proportion in geometry II

Lesson details

Key learning points

  1. In this lesson, we will divide oblique line segments into specified ratios by dividing the segment's horizontal and vertical displacements in the same ratio.

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5 Questions

Q1.
State the ratio between the side lengths AB and BC.
10 : 4
2 : 4
4 : 10
Correct answer: 4 : 2
Q2.
State the constant of proportionality between triangle ABC and triangle DEF.
2
3
4
Correct answer: 5
Q3.
Find the length of side DE.
10cm
Correct answer: 20cm
40cm
80cm
Q4.
Find the length DE.
20cm
25cm
80cm
Correct answer: 8cm
Q5.
Find the length DE.
10cm
11.5cm
30cm
Correct answer: 7.5cm

5 Questions

Q1.
Fill in the gap: We can divide a line segment into a given ________ by considering the coordinates of its endpoints.
constant
coordinate
proportion
Correct answer: ratio
Q2.
Fill in the gap: The _____________ of proportionality of ADE to ABC is 1.5.
Correct answer: constant
coordinate
proportion
ratio
Q3.
Fill in the gap: The ratio of 𝐴𝐸: 𝐴𝐶 = 6: 9 = 2:___
1
2
Correct answer: 3
4
Q4.
Fill in the gap: The ratio of 𝐴𝐸: 𝐸𝐶 = ___: 1
1
Correct answer: 2
3
4
Q5.
A line segment ABC is split in the ratio AB to BC as 3 : 5. What fraction of the line segment is AB?
3/5
Correct answer: 3/8
5/3
5/8

Lesson appears in

UnitMaths / Ratio