Properties of Quadrilaterals using Congruent Triangles

Establish properties of quadrilaterals using congruent triangles and angle properties, and solve related numerical problems using reasoning(ACMMG202)

LO:To determine the properties of quadrilaterals using congruent triangles.
Know:

  • The definition of congruence..
  • Quadrilaterals are shapes that have 4 sides and 4 angles.

Understand:

  • That the properties of quadrilaterals can be found using congruent triangles.

Do:

  • I can determine the properties of quadrilaterals using congruent triangles..

Triangle Congruency Rules

  SSS – Side, Side, Side Congruence

SAS – Side, Angle, Side

RHS (Right-angled Triangles) – Right, Hypotenuse, Side

AAS – Angle, Angle, Side


Types of Quadrilaterals

Congruence within Quadrilaterals Videos

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