Main content

# Congruence

Learn

Congruent shapes & transformationsNon-congruent shapes & transformations

Practice

Congruence & transformationsGet 3 of 4 questions to level up!

Learn

Congruent triangles & the SSS postulate/criterionTriangle congruence postulates/criteriaWhy SSA isn't a congruence postulate/criterionDetermining congruent trianglesTriangle congruence review

Practice

Determine congruent trianglesGet 5 of 7 questions to level up!

Learn

Angles in a triangle sum to 180° proofProofs concerning isosceles trianglesProofs concerning equilateral triangles

Learn

Corresponding angles in congruent trianglesIsosceles & equilateral triangles problemsFinding angles in isosceles trianglesFinding angles in isosceles triangles (example 2)

Practice

Find angles in congruent trianglesGet 3 of 4 questions to level up!

Learn

Proof: Opposite sides of a parallelogramProof: Diagonals of a parallelogramProof: Opposite angles of a parallelogramProof: The diagonals of a kite are perpendicularProof: Rhombus diagonals are perpendicular bisectorsProof: Rhombus area

Learn

Geometry proof problem: midpointGeometry proof problem: congruent segmentsGeometry proof problem: squared circle

Learn

Geometric constructions: perpendicular bisectorGeometric constructions: perpendicular lineGeometric constructions: angle bisector