Year 7

Ratio and proportion in geometry II

Year 7

Ratio and proportion in geometry II

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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.
An image in a quiz
10 : 4
2 : 4
4 : 10
Correct answer: 4 : 2
Q2.
State the constant of proportionality between triangle ABC and triangle DEF.
An image in a quiz
2
3
4
Correct answer: 5
Q3.
Find the length of side DE.
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10cm
Correct answer: 20cm
40cm
80cm
Q4.
Find the length DE.
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20cm
25cm
80cm
Correct answer: 8cm
Q5.
Find the length DE.
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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.
An image in a quiz
Correct answer: constant
coordinate
proportion
ratio
Q3.
Fill in the gap: The ratio of 𝐴𝐸: 𝐴𝐢 = 6: 9 = 2:___
An image in a quiz
1
2
Correct answer: 3
4
Q4.
Fill in the gap: The ratio of 𝐴𝐸: 𝐸𝐢 = ___: 1
An image in a quiz
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