91Ó°ÊÓ

Complete.

5. If the measures of the acute angles of a right triangle are$2x+4$ and $3x-9$, then $x=?$.

Look for a pattern and predict the next two numbers in each sequence.$2,\text{ â¶Ä‰}3,\text{ â¶Ä‰}5,\text{ â¶Ä‰}8,\text{ â¶Ä‰}12,\mathrm{....}$

Tell whether the reasoning process is deductive or inductive.

John knows that multiplying a number by -1 merely changes the sign of the number. He reasons that multiplying a number by an even power of -1 will changes the sign of the number an even number of times. He concludes that this is equivalent to multiplying a number by +1, so that every even power ofis equal to +1.

In each exercise some information is given. Use this information to name the segments that must be parallel. If there are no such segments, say so.

$m∠1=m∠8$

Match the orthographic projects with their isometric drawings. If there is no isometric drawing, then make one.

Assume that $aâˆ\yen b$and $câˆ\yen d$.

If $m∠13=110$, then $m∠15=\underset{¯}{\text{?}}$and $m∠3=\underset{¯}{\text{?}}$

In each exercise some information is given. Use this information to name the segments that must be parallel. If there are no such segments, write none.

$m∠2=m∠5$

Complete.

If the measures of the acute angles of a right triangle are $2x+4$and $3x-9$, then $x=?$.

Classify each pair of angles as alternate interior angles, same-side interior angles, corresponding angles, or none of these.

and

Classify each pair of angles as alternate interior angles, same-side interior angles, or corresponding angles.

and