Lessons 1.1–1.7: polynomials, algebraic proof and literal equations, solving quadratics, geometry notation, the segment and angle addition postulates, and your first geometric proofs.
Reasons bank
GivenDistributive propertyCLTAddition POESubtraction POEMultiplication POEDivision POEReflexiveSymmetricTransitiveSubstitutionDefinition of ≅Definition of midpointDefinition of bisectorSegment Addition PostulateAngle Addition PostulateDefinition of right angle
Before you answer
✓Standard form first, then read off the degree and leading coefficient.
✓"A subtracted from B" = B − A. Distribute the negative to every term.
✓Quadratics: set = 0, check for a GCF, and remember ± when you take a square root.
✓Notation: a length has no bar; a ray is named endpoint first; the vertex goes in the middle of an angle name.
✓Found x? Plug it back in for the length or angle they actually asked for.