Angles & Polygons
Use direct and indirect measurement to solve problems.
Specific Outcome 1
Demonstrate an understanding of angles by:
identifying examples of angles in the environment
classifying angles according to their measure
estimating the measure of angles, using 45°, 90° and 180° as reference angles
determining angle measures in degrees
drawing and labelling angles when the measure is specified.
Achievement Indicators
Specific Outcome 1
Provide examples of angles found in the environment.
Classify a given set of angles according to their measure; e.g., acute, right, obtuse, straight, reflex.
Sketch 45°, 90° and 180° angles without the use of a protractor, and describe the relationship among them.
Estimate the measure of an angle, using 45°, 90° and 180° as reference angles.
Measure, using a protractor, given angles in various orientations.
Draw and label a specified angle in various orientations, using a protractor.