Curated OER
Proofs Chapter 2: Geometry
In this geometry learning exercise, students look at given pictures and prove congruent lines and angles. This three-page learning exercise contains nine multi-step problems.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Flecha
Can you make the second arrow the same size as the first? You will be surprised.
Illustrative Mathematics
Illustrative Mathematics: 8.g Congruent Segments
Eighth graders are shown two line segments that are the same length and must describe a sequence of reflections that exhibits a congruence between them. Aligns with 8.G.A.2.