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Geometry, Measurement and Finance 10
Geometry
11. Demonstrate an understanding of angles, including acute, right, obtuse, straight and reflex
11.3 Parallelograms
Parallelogram Definition and Properties
Understand what makes a shape a parallelogram, and master its side, angle, and diagonal properties with clear diagrams and worked examples.
What You'll Learn
Identify a parallelogram by its two pairs of parallel and congruent opposite sides.
Apply the rule that opposite angles in a parallelogram are always congruent.
Use the consecutive angles supplementary rule to find missing angle measures quickly.
Recognize that the diagonals of a parallelogram always bisect each other at their midpoint.
Compare special parallelograms such as rectangles, rhombi, and squares to a general parallelogram.
Solve algebraic problems involving unknown parallelogram side lengths, angles, and diagonal segments.
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NB Curriculum Aligned