Reflex Angles
This worksheet introduces students to reflex angles and how they are measured. This is a part of a larger unit designed to help your students learn how to estimate, measure, draw and compare angles.
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Learning goals
- We are learning to construct angles using a protractor and to estimate, measure and compare angles using degrees and name the angles appropriately, e.g. less than 90o equals an acute angle.
- We are learning to construct angles using a protractor and to estimate, measure and compare angles using degrees.
- We are learning to identify, measure, estimate and compare angles on a straight line, angles at a point and vertically opposite angles to find unknown angles.
- We are learning to identify, measure, estimate and compare angles on a straight line, angle at a point and vertically opposite angles to find unknown angles.
Curriculum alignment
AC9M5M04
9
Estimate, construct and measure angles in degrees, using appropriate tools including a protractor, and relate these measures to angle names
AC9M6M04
9
Identify the relationships between angles on a straight line, angles at a point and vertically opposite angles; use these to determine unknown angles, communicating reasoning
ACMMG112
8.4
Estimate, measure and compare angles using degrees. Construct angles using a protractor
ACMMG141
8.4
Investigate, with and without digital technologies, angles on a straight line, angles at a point and vertically opposite angles. Use results to find unknown angles
MA3-1WM
old
Describes and represents mathematical situations in a variety of ways using mathematical terminology and some conventions
MA3-16MG
old
Measures and constructs angles, and applies angle relationships to find unknown angles
MA3-GM-03
new
Measures and constructs angles, and identifies the relationships between angles on a straight line and angles at a point
MA3-2DS-01
new
Investigates and classifies two-dimensional shapes, including triangles and quadrilaterals based on their properties
Australian Curriculum covers QLD / SA / WA / NT / TAS / ACT.
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