Across
- 6. When you drop something, it falls along a ________ line
- 7. This angle is exactly 180 degrees
- 9. A port city in ancient Egypt
- 11. This angle is smaller than 90 degrees
- 12. A 90 degree angle is called a __________ angle
- 13. The science that deals with measuring the Earth, describing shapes and their relationships
Down
- 1. A line that touches a circle in one point
- 2. Two lines that intersect each other at a right angle
- 3. Circles that have the same center
- 4. A triangle that has at least two sides that are equal in length
- 5. A line segment that runs from the center of the circle to its outer edge
- 8. A shape that has three corners and three straight sides
- 10. The fourth smallest square number