source: discovering geometry by michael serra. define a “good definition” identify...
TRANSCRIPT
Source: Discovering Geometry by Michael Serra
Define a “good definition”Identify counterexamples when
possibleState converses of definitionsDefine a right angle and an acute
angle
A good definition...is precise.
places an object to be defined into a class of well-defined similar things
is able to state how different an object is from the other members of the class.
STEPS:
1. Classify
2. Differentiate
3. Test
Let’s recall our SETS.
Is this a well-defined set?
the set of famous songs of Michael Jackson released from 1980 – 1990
the set of numbers between -3 and 3
Definition:
A polygon with exactly six sides is a hexagon.
Re-state the definition…
A hexagon is a polygon with exactly six sides.
