Query: proofs without words
Without Law 10
Proofs Without Words: Exercises in Visual Thinking (Classroom Resource Materials)
Proofs Without Words III: Further Exercises in Visual Thinking (Classroom Resource Materials)
Proofs without Words II (Classroom Resource Materials)
Proofs without Words: Exercises in Visual Thinking (Classroom Resource Materials)
Proofs Without Words II: More Exercises in Visual Thinking (Classroom Resource Materials)