Mastering Angle Facts
Mathematics
Year 9
12 questions
~24 mins
0 views0 downloads
About This Worksheet
A worksheet covering Angle Facts for Year 9 students, focusing on understanding and applying properties of angles in various geometric contexts.
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Mastering Angle Facts
Subject: MathematicsGrade: Year 9
Name:
Date:
Untitled Worksheet
Grade Year 9
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
What is the measure of a right angle?
[1 mark]2.
Identify the type of angle measuring 135°.
[1 mark]AAcute
BRight
CObtuse
DStraight
3.
Calculate the missing angle in a triangle where two angles are 50° and 70°.
[2 marks]4.
What is the sum of the interior angles of a pentagon?
[1 mark]5.
In a straight line, two angles are supplementary. If one angle is 120°, what is the other?
[1 mark]6.
Angles on a straight line are always...
[1 mark]A90
B180
C360
D90 or 180
7.
Two parallel lines are cut by a transversal. If one of the alternate interior angles measures 65°, what is the measure of the corresponding angle?
[2 marks]8.
Prove that the sum of angles in a triangle is 180° using a straight line and reasoning.
[3 marks]9.
In a quadrilateral, three angles are 85°, 90°, and 100°. Find the fourth angle.
[2 marks]10.
Angles A and B are supplementary. If angle A is 3x + 10 and angle B is 2x + 30, find the value of x.
[3 marks]11.
A pair of angles are vertically opposite and measure 75°. What are the measures of the angles?
[2 marks]12.
A real-world scenario: A ladder leans against a wall forming a 70° angle with the ground. Calculate the angle between the ladder and the wall.
[2 marks]Quick Actions
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Details
- Created
- 12/30/2025
- Updated
- 12/30/2025
- Type
- worksheet