8 In un rombo la diagonale maggiore misura il doppia della minore. Sapendo che la diagona- le maggiore misura 60 mm calcola l'area del rombo in centimetri quadrati. \( \quad\left[9 \mathrm{~cm}^{2}\right] \)

5. List TwO properties of each of the following: a) A Parallelogram b) A Rhombus c) A Rectangle d) A Trapezoid

3] The dimensions of the base of a cuboid are \( \sqrt{3} \mathrm{~cm} \). and \( (\sqrt{3}-1) \mathrm{cm} \). an ts height equals \( (3+\sqrt{3}) \mathrm{cm} \). Calculate its volume. \( L L=\sqrt{3} \)

BLos estudiantes de 9 dibujaron un mural como el de la figura. Damyor \( =8 \mathrm{~m} \) y dmonor \( =2 \pi \mathrm{~m} \) ¿cuál es el área rayada de la figura?

3. Sketch and name a quadrilateral that fits each description. Make sure to label all equal sides and angles. a) The diagonals are equal, but the sides are not all equal. b) The diagonals are equal and all the sides are equal. c) The diagonals are not equal and no two sides are equal.

In the pentagon \( A B C D E \) angle \( A C B= \) angle \( A E D=90^{\circ} \). Triangle \( A C D \) is equilateral with side length 12 cm . \( D E=B C=6 \) a. Calculate \( A E \).