ACUTE ANGLE
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( K-12math.info )

Select and click on one of the following to obtain additional information about the term:
  WikiEducator - Acute angle
* Is an angle that measures between 0 and 90 degrees.
* Is an angle that measures between 0 and pi/2 radians.
 
  Wiktionary - Acute angle:
An angle measuring less than ninety degrees.
 
  Wikipedia - Angles smaller than a right angle (less than 90°) are called acute angles ("acute" meaning "sharp").

  Wikibook -
an angle is said to be acute if it measures between 0 and 90 degrees, exclusive.

  Math Wikia -
An acute angle is any angle whose measure is between 0° (0 rad) and 90° (p/2 rad), exclusive.
   Retrieved 2 March 2010

ACUTE ANGLE
Series | Code | Information


Textbook Series:
Grades: K-11 (ages: 5-16)
1. Harcourt, Brace Jovanovich(1972)
2. D.C. Heath (1972)
3. Laidlaw (1978)
4. Houghton Mifflin(1981)
5. Addison-Wesley(1985)
6. Harper and Row(1985)
7. Holt, Rinehart and Winston(1985)
8. Harcourt, Brace Jovanovich(1985)
9. Houghton Mifflin(1985)
10. Scott, Foresman(1986)
11. Houghton Mifflin(2002)
12. McGraw-Hill/Glencoe K-8 (2002)

CNX Connexions OER Mathematics Grade 1-9 (2009)

Code:
USAGE CODE:
4  Definition or formal development
3 Term present
2 Synonym used
1 Enrichment
- Term not present
*- Material unavailable
Grade: _K___ _1___ _2___ _3___ _4___ _5___ _6___ _7___ _8___ _9___ _10__ _11__
Age: 5 6 7 8 9 10 11 12 13 14 15 16
  1-1972 - - - - 4-206 4-064 4-282 4-192 4-163 4-437 4-069 -
  2-1972 - - - - - - - - 4-073 - 4-086 -
  3-1978 - - - - - 4-068 4-102 4-105 4-175 - 4-047 -
  4-1981 - - - - - - - 3-170 4-152 4-454 - -
  5-1985 - - - - - 4-274 4-254 4-138 4-218 - 3-050 -
  6-1985 - - - - - - 4-326 4-270 4-160 - 4-023 -
  7-1985 - - - - - 4-262 4-252 4-192 4-194 - 4-013 -
  8-1985 - - - - - 4-332 4-308 4-306 4-150 4-508 4-024 -
  9-1985 - - - - 4-192 4-156 4-178 - 4-158 4-469 4-010 -
 10-1986 - - - - - 4-306 4-274 4-259 4-202 3-527 4-040 -
 11-2002 - - - - 4-464 4-458 4-363 4-391 - - - -
 12-2002 - - - - 4-420 4-490 4-459 4-449 - *- *- *-
 CNX
  2009		 *- - - 3 - - 4 - 4 - *- *-

usage code - page number

(for OER materials, click on the usage code under the desired grade level.)



©1972 (paper), 1985 (APPLE II/PC), 2005(www), 2010 Jim Kelly - All Rights Reserved.