Properties and constructions common mistakes

Common mistakes

• Geometric terms and notation common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use conventional geometric terms and notation for points, lines, vertices, edges, planes, angles, polygons and symmetries..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Geometric terms and notation.

• Geometric terms and notation common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use standard conventions for triangle sides and angles and draw diagrams from written descriptions..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Geometric terms and notation.

• Constructions and loci common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use standard ruler and compass constructions, including perpendicular bisectors, perpendiculars and angle bisectors..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Constructions and loci.

• Constructions and loci common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use constructions to construct figures and solve loci problems..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Constructions and loci.

• Constructions and loci common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Know that perpendicular distance from a point to a line is the shortest distance to the line..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Constructions and loci.

• Angle facts common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Apply angle facts at a point, on a straight line and for vertically opposite angles..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Angle facts.

• Angle facts common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use alternate and corresponding angles on parallel lines..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Angle facts.

• Angle facts common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Derive and use angle sums in triangles and polygons and properties of regular polygons..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Angle facts.

• Quadrilaterals, triangles and polygons common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Derive and apply properties and definitions of special quadrilaterals, triangles and other plane figures using appropriate language..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Quadrilaterals, triangles and polygons.

• Triangle congruence common mistake 1

  Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use basic triangle congruence criteria: SSS, SAS, ASA and RHS..

  Fix itShow the method first, then give the final answer in the required form. Apply this directly to Triangle congruence.