4:30 PM Sat Mar 22 67\% Exit Z.11 Find missing angles in quadrilaterals II Video Example 0 A parallelogram has one angle that measures $$ 90^{\circ} $$. What are the measures of the other three angles in the parallelogram? $$ \square $$ - $$ \square $$ $$ { }^{\circ} $$, and $$ \square $$。 Submit Not ready yet?

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1. In any parallelogram, opposite angles are equal and consecutive angles are supplementary (i.e., they add up to $$ 180^{\circ} $$).

2. Since one angle is given as $$ 90^{\circ} $$, its consecutive angles must satisfy
   $$
   90^{\circ} + \text{angle} = 180^{\circ},
   $$
   which gives
   $$
   \text{angle} = 180^{\circ} - 90^{\circ} = 90^{\circ}.
   $$

3. The angle opposite the given $$ 90^{\circ} $$ is also $$ 90^{\circ} $$.

4. Therefore, all four angles in the parallelogram are $$ 90^{\circ} $$.

The measures of the other three angles are $$ 90^{\circ} $$, $$ 90^{\circ} $$, and $$ 90^{\circ} $$.
All four angles in the parallelogram are $$ 90^{\circ} $$.

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A parallelogram has one angle that measures . What are the measures of the other three angles in the parallelogram?

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4:30 PM Sat Mar 22 67% Exit Z.11 Find missing angles in quadrilaterals II Video Example 0 A parallelogram has one angle that measures . What are the measures of the other three angles in the parallelogram? , and 。 Submit Not ready yet?