4.2 Trigonometric Functions of Acute Angles
... Recall that geometric figures are similar if they have the same shape even though they may have different sizes. Having the same shape means that the angles of one are congruent to the angles of the other and their corresponding sides are proportional. Similarity is the basis for many applications, ...
... Recall that geometric figures are similar if they have the same shape even though they may have different sizes. Having the same shape means that the angles of one are congruent to the angles of the other and their corresponding sides are proportional. Similarity is the basis for many applications, ...
Geometry of Basic Quadrilaterals Theorem 1. Parallel lines Two
... (C) The diagonals AC and BD intersect at their midpoint. (D) Opposite sides are equal. (E) Opposite angles are equal. Theorem 5. Rectangle Let ABCD be a quadrilateral. The following statements are equivalent: (A) ABCD is a rectangle (i.e. parallelogram with a right angle). (B) The diagonals AC and B ...
... (C) The diagonals AC and BD intersect at their midpoint. (D) Opposite sides are equal. (E) Opposite angles are equal. Theorem 5. Rectangle Let ABCD be a quadrilateral. The following statements are equivalent: (A) ABCD is a rectangle (i.e. parallelogram with a right angle). (B) The diagonals AC and B ...
