Worksheets — Set 20
Geometry · Honors · Formal proof writing and justification
Print and write your answers. Use diagrams to show thinking.
Warm-up
1. Name the transformation: slide right 22 units: ___ 2. Sequence: reflect then rotate 90°. Describe result. ___ 3. Corresponding parts of congruent triangles: list two pairs. ___
_See printable PDF for diagram._
Written practice
1. Name the transformation: slide right 21 units: ___ 2. Sequence: reflect then rotate 0°. Describe result. ___ 3. Corresponding parts of congruent triangles: list two pairs. ___ 4. Which criterion? SSS, SAS, ASA, or AAS? ___ 5. Complete the proof step: ∠A ≅ ∠D because ___ 6. Draw a diagram and mark congruent parts. 7. Name the transformation: slide right 24 units: ___ 8. Sequence: reflect then rotate 270°. Describe result. ___
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More written practice
1. Name the transformation: slide right 27 units: ___ 2. Sequence: reflect then rotate 180°. Describe result. ___ 3. Name the transformation: slide right 30 units: ___ 4. Sequence: reflect then rotate 90°. Describe result. ___ 5. Name the transformation: slide right 33 units: ___ 6. 5 + 5 = ___
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Patterns and rules
1. Name the transformation: slide right 38 units: ___ 2. Sequence: reflect then rotate 90°. Describe result. ___ 3. Corresponding parts of congruent triangles: list two pairs. ___
_See printable PDF for diagram._
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Stretch
1. Name the transformation: slide right 46 units: ___ 2. Sequence: reflect then rotate 90°. Describe result. ___
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Parent tip: Name the transformation sequence