Geometry Definitions
  • 1. acute triangle
A) has one obtuse angle
B) the sum of all the angles is less than 90 degrees
C) all angles measure less than 90 degrees
D) all angles measure more than 90 degrees
  • 2. acute angle
A) less than 90 degrees
B) more than 90 degrees
C) exactly 90 degrees
D) exactly 180 degrees
  • 3. obtuse angle
A) measures more than 90 degrees, but less than 180 degrees
B) measures less than 90 degrees
C) measures exactly 90 degrees
D) measures 180 degrees
  • 4. obtuse triangle
A) the sum of all three angles equals 105 degrees
B) has no obtuse angles
C) has one obtuse angle
D) has two obtuse angles
  • 5. right angle
A) measures more than 90 degrees
B) measures less than 90 degrees
C) measures 180 degrees
D) measures exactly 90 degrees
  • 6. right triangle
A) has two right angles
B) has one right angle
C) the sum of all three angles equals 90 degrees
D) has no right angles
  • 7. straight angle
A) measures more than 180 degrees
B) measures less than 180 degrees
C) the sum of the length of the angles equals 180 degrees
D) exactly 180 degrees
  • 8. equilateral triangle
A) has 4 sides
B) all sides are the same length
C) only 2 sides are the same length
D) no sides are the same length
  • 9. isosceles triangle
A) two or more sides are the same length
B) no sides are the same length
C) has 5 sides
D) a new sauce for your chicken nuggets
  • 10. scalene triangle
A) no sides are the same length
B) all sides are the same length
C) two or more sides are the same length
D) exactly two sides are the same length
  • 11. triangle
A) polygon with four sides
B) polygon with six sides
C) polygon with three sides
D) polygon with five sides
  • 12. angle
A) two rays having a common endpoint
B) a polygon
C) something that has wings
D) always exactly 90 degrees
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