November 05, 2014
2.02 Length, Measure, and Congruence
Goals
-write statements using the correct notation
-interpret statements that use congruence
notation
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Remember:
We use congruent for objects
and we use equal for numbers.
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Translate the congruence statements to sentences.
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Notation
Line segment AB is congruent to line segment CD
The length of line segment AB is equal to the
length of line segment CD.
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Highlighted ones are nonsense!
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Which of the following are correct?
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Are these true?
If 2 segments are the same length, then they
are congruent.
If 2 segments are congruent, then they are
the same length.
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Notation with Angles
A ≅ B means angle A is congruent to
angle B
m A = m B means the measure of angle
A is equal to the measure of angle B
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Are these true?
If 2 angles are congruent, then they have the
same measure.
A ≅ B means m A = m B
If 2 angles have the same measure, then they are
congruent.
m A = m B means A ≅ B
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