Across
- 3. of a Square The Perimeter is the distance around the edge.
- 6. perimeter is the distance around the edge of the triangle: just add up the three sides:
- 7. the Names Sometimes a triangle will have two names, for example:
- 9. has equal sides (marked "s") and every angle is a right angle (90°) Also opposite sides are parallel.
- 11. has opposite sides parallel and equal in length. Also opposite angles are equal (angles "A" are the same, and angles "B" are the same).
- 13. Quadrilaterals when two sides cross over, we call it a "Complex" or "Self-Intersecting" quadrilateral, like these:
- 14. A concave Kite is called a Dart
- 15. TriangleHas an angle more than 90°
Down
- 1. of a Square A square has two diagonals, they are equal in length and intersect in the middle.
- 2. is a four-sided shape where every angle is a right angle (90°). Also opposite sides are parallel and of equal length.
- 4. of a Square The Perimeter is 4 times the side length
- 5. A quadrilateral is a polygon. In fact it is a 4-sided polygon, just like a triangle is a 3-sided polygon, a pentagon is a 5-sided polygon, and so on.
- 8. of a Kite Multiply the lengths of the diagonals and then divide by 2 to find the Area:
- 10. is a four-sided shape where all sides have equal length (marked "s").
- 12. of a Square The Area is the side length squared: