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### Transcript of "Triangles And Quadrilaterals"

1. 1. Grand Geometry Triangles & Quadrilaterals
2. 2. Vocabulary of a Triangle <ul><li>Hypotenuse </li></ul><ul><ul><li>Side opposite to the right angle in a right triangle </li></ul></ul><ul><li>Leg </li></ul><ul><ul><li>Other sides of the right triangle </li></ul></ul>
3. 3. Classifying Triangles by Their Sides <ul><li>Isosceles Triangle </li></ul><ul><ul><li>Triangle with exactly 2 congruent sides </li></ul></ul><ul><li>Scalene Triangle </li></ul><ul><ul><li>Triangle with no congruent sides </li></ul></ul><ul><li>Equilateral Triangle </li></ul><ul><ul><li>Triangle with all congruent sides </li></ul></ul>
4. 4. Classifying Triangles by Their Angles <ul><li>Acute Triangle </li></ul><ul><ul><li>Triangle with all acute angles (less than 90 o ) </li></ul></ul><ul><li>Right Triangle </li></ul><ul><ul><li>Triangle with 1 right angle (90 o ) </li></ul></ul><ul><li>Obtuse Triangle </li></ul><ul><ul><li>Triangle with 1 obtuse angle (more than 90 o ) </li></ul></ul><ul><li>Equiangular Triangle </li></ul><ul><ul><li>Triangle with all equal angles (60 o ) </li></ul></ul>
5. 5. General Quadrilateral <ul><li>4 sides </li></ul><ul><li>4 angles </li></ul>
6. 6. Trapezoid <ul><li>Exactly 1 pair of parallel sides </li></ul><ul><li>Also can be called: </li></ul><ul><ul><li>Quadrilateral </li></ul></ul>
7. 7. Parallelogram <ul><li>2 pairs of congruent sides </li></ul><ul><li>2 pairs of parallel sides </li></ul><ul><li>Also can be called: </li></ul><ul><ul><li>Quadrilateral </li></ul></ul>
8. 8. Rectangle <ul><li>2 pairs of congruent sides </li></ul><ul><li>4 right angles </li></ul><ul><li>Also can be called: </li></ul><ul><ul><li>Parallelogram </li></ul></ul><ul><ul><li>Quadrilateral </li></ul></ul>
9. 9. Rhombus <ul><li>4 congruent sides </li></ul><ul><li>2 pairs of congruent angles </li></ul><ul><li>Also can be called: </li></ul><ul><ul><li>Parallelogram </li></ul></ul><ul><ul><li>Quadrilateral </li></ul></ul>
10. 10. Square <ul><li>4 congruent sides </li></ul><ul><li>4 right angles </li></ul><ul><li>Also can be called: </li></ul><ul><ul><li>Rhombus </li></ul></ul><ul><ul><li>Rectangle </li></ul></ul><ul><ul><li>Parallelogram </li></ul></ul><ul><ul><li>Quadrilateral </li></ul></ul>