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OpenStudy (anonymous):
right angles are congruent .true/sometimes/never
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OpenStudy (amistre64):
ow many kinds of right angles are there?
OpenStudy (rsadhvika):
all right angles are congruent by definition
OpenStudy (highschoolmom2010):
true :DD
OpenStudy (amistre64):
all 30 degree angles are congruent to each other as well :)
OpenStudy (amistre64):
im not too sure about those 22.5s tho
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OpenStudy (rsadhvika):
yeah for right angles, there is an explicit postulate in euclid elements saying just that 'all right angles are congruent'
OpenStudy (anonymous):
Thankyou so mucch . :DDD
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