In the following figures, find the value of x. |
(a) |
(b) |
Answer:
(a) Sum of interior opposite angles = Exterior angle \[x{}^\circ \text{ }+\text{ }90{}^\circ \text{ }=\text{ }155{}^\circ \] \[x{}^\circ =\text{ }155{}^\circ -90{}^\circ =65{}^\circ \] (b) Similarly, \[30{}^\circ \text{ }+\text{ }90{}^\circ \text{ }=\text{ }x{}^\circ \] \[x{}^\circ \text{ }=\text{ }120{}^\circ \]
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