Across
- 3. The length of a segment that connects a vertex of the triangle to a line containing the opposite base (side) and is perpendicular to that line
- 5. An operation that tells how many objects there are when two sets are combined
- 6. An angle with a measure greater than 0º and less than 90º. An example is shown below.
- 7. The number you need to add to a given number to get a sum of 0
- 8. An algebra tile is a manipulative whose area represents a constant or variable quantity
Down
- 1. The absolute value of a number is the distance of the number from zero
- 2. A block used to represent one whole or 100%.
- 3. A branch of mathematics that uses variables to generalize the rules of numbers and numerical operations
- 4. A triangle with all three angle measures less than 90º
- 8. A fixed rule for carrying out a mathematical procedure