Answer:
7) m∠EDC = 61°
8) FB = 13
Step-by-step explanation:
In number 7 the figure is a rhombus
∴ The diagonals bisects the vertex angles and every two opposite angles are equal
∵m∠ABC = 122°
∴m∠ADC = 122° opposite angles
∵BD bisects angle ADC
∴m∠EDC = 122 ÷ 2 = 61°
In number 8
∵ABCD is a rectangle
∴ its diagonals equal and bisect each other
∵AC = 26
∴BD = 26
∵F is the mid-point of AC and BD
∴FB = 26 ÷ 2 = 13
