2. line - a straight path that goes on forever in opposite directions.

3. line segment - part of a line that has two endpoints.

4. endpoint - the point at either end of a line segment or the beginning of a ray.

5. angle - a figure formed by two rays with the same endpoint.

6. ray - part of a line that has one endpoint and extends without end in one direction.

7. vertex - a point that is shared by two sides of an angle of two sides of a polygon.

8. right angle - one of four angles made by perpendicular lines, has an exact measurement of 90 degrees.

9. acute angle - an angle with less than 90 degrees.

10. obtuse angle - an angle greater than 90 degrees and less than a straight angle.

11. straight angle - an angle with an exact measurement of 180 degrees, looks like a line, but is actually two rays going in opposite directions.

12. degree - a unit for measuring angles.

13. protractor - a semicircular tool for measuring and constructing angles.

1 meter = 100 centimeters

12 inches = 1 foot

1 foot = 12 inches; 3 feet = 1 yard

2 cups = 1 pint; 4 cups = 1 quart; 16 cups = 1 gallon

1 pint = 2 cups

1 quart = 4 cups = 2 pints

1 gallon = 4 quarts = 8 pints = 16 cups

1 liter = 1,000 milliliters

1,000 milliiliters = 1 liter

1 pound = 16 ounces

16 ounces = 1 pound

1,000 grams = 1 kilogram

1 kilogram = 1,000 grams

Explorer

A person who travels to new lands to learn about or claim the land.

Mission

A small religious community where priests and others lived.

Barter

To trade or exchange goods or services without the use of money.

Cache

A collection of items stored or hidden, or a hiding place for such items.

Fur trade

A business where animal fur is traded for other things or for money.

Rendezvous

A large gathering of fur traders where furs and supplies were bought, sold, and traded.

Trading post

A store or small settlement established for trading

Mountain men

Fur trappers and traders

]]>A person who travels to new lands to learn about or claim the land.

Mission

A small religious community where priests and others lived.

Barter

To trade or exchange goods or services without the use of money.

Cache

A collection of items stored or hidden, or a hiding place for such items.

Fur trade

A business where animal fur is traded for other things or for money.

Rendezvous

A large gathering of fur traders where furs and supplies were bought, sold, and traded.

Trading post

A store or small settlement established for trading

Mountain men

Fur trappers and traders

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