Finding Missing: Real-world Applications
Mathematics
Year 9
12 questions
~24 mins
1 views0 downloads
About This Worksheet
A worksheet focusing on finding missing angles on a straight line through real-world contexts and calculations for Year 9 students.
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Full preview • 12 questions
Finding Missing: Real-world Applications
Subject: MathematicsGrade: Year 9
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Untitled Worksheet
Grade Year 9
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Calculate the missing angle on a straight line if one adjacent angle measures 65°.
[2 marks]2.
Find the value of the unknown angle when two angles on a straight line are 80° and x°.
[2 marks]3.
A straight line forms an angle of 120° with a horizontal surface. What is the measure of the angle supplementary to it?
[3 marks]4.
If a ray forms an angle of 45° with a straight line and the adjacent angle is 135°, what is the measure of the other angle on the straight line?
[2 marks]5.
In a diagram, two angles on a straight line are 70° and x°. Find x.
[2 marks]6.
A street sign shows two angles on a straight line: one is 55°. What is the measure of the other angle?
[2 marks]7.
A fence post leans, forming an angle of 130° with the ground. What is the angle between the post and the ground's extension on the other side?
[2 marks]8.
Plot a graph of y=2x on the grid provided, then find the value of x when y=10.
[3 marks]9.
Construct a straight line with an angle of 100° at one point. Label the supplementary angle to it.
[3 marks]10.
A real-world scenario: A carpenter cuts a piece of wood so that it forms a 125° angle with another piece. What is the measure of the supplementary angle that the other piece makes on the straight line?
[3 marks]11.
A driver notices a traffic sign indicating a 60° turn. If the turn is part of a straight line, what is the angle on the opposite side of the line?
[2 marks]12.
Error Analysis: A student states that if one angle on a straight line is 85°, the other must be 95°. Is this correct? If not, explain and correct the mistake.
[3 marks]Quick Actions
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Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet