1
Definitions
Use accurate definitions for quadrilaterals
Chapter route
4-gons (Quadrilaterals)
This chapter page turns the high-level subject view into an ordered learning slice, with direct links from curriculum items into topic and skill detail.
Ordered curriculum items
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2
Classification
Classify quadrilaterals by sides, angles and symmetry
3
Parallelogram Proofs
Use equivalent properties to prove a parallelogram
4
Parallelogram Properties
Solve problems using sides, angles and diagonals
5
Midpoint Theorem
Prove theorem connecting side midpoints in triangles
6
Midpoint Theorem
Use midpoint theorem in numerical and proof problems
7
Converse Theorem
Use converse reasoning with midpoint theorem
8
Medians
Understand concurrency of medians
9
Medians
Use centroid division ratio in problems
10
Midpoint Quadrilateral
Show Varignon-style midpoint result
11
Coordinate Applications
Find midpoint and missing parallelogram vertex
12
Reflection Symmetry
Identify mirror symmetry in quadrilaterals
13
Rotation Symmetry
Identify rotational symmetry in quadrilaterals
14
Tiling
Understand how quadrilaterals can tile a plane
15
Logical Converses
Write and test converse statements
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