FC: My Geometry Scrapbook
2: Measuring and Drawing angles | 1. Mark a point P to be the vertex of the new angle, 2. Draw a ray PQ in any direction and any length. This will be one side of the new angle, 3. Set the compass point on A and adjust it to any convenient width. 4. Draw an arc across both sides of the angle, creating points J and K. 5. Move the compass to P and draw a similar arc, crossing PQ at M, 6. Set the compass on K and set its width to J, 7. Move the compass to M and draw an arc crossing the first, creating point L, 8. Draw a ray PR from P through L, Done. The angle RPQ has the same measure as BAC
4: The properties of Isosceles triangles | Def: A triangle which has two of its sides equal in length. | Properties: | 1.The unequal side of an isosceles triangle is usually referred to as the 'base' of the triangle. 2.The base angles of an isosceles triangle are always equal. In the figure below, the angles ABC and ACB are always the same 4.The altitude is a perpendicular distance from the base to the topmost vertex. 5.Opposite sides of the two congruent angles are also congruent.
6: Properties of Kites | A kite is a quadrilateral in which two disjoint pairs of consecutive sides are congruent (“disjoint pairs” means that one side can't be used in both pairs).