Fox talbot - <span>Photographs
isaac singer - </span>Sewing machine
<span>Etienne Lenoir - <span>Gasoline engine
</span></span><span>Alfred Nobel - <span>Dynamite
</span></span><span>Wilhelm Roentgen - <span>X-rays</span></span>
<span>Tamara is writing statements to prove that the sum of the measures of interior angles of triangle PQR is equal to 180°. Line m is parallel to line n.
Which is a true statement she could write?</span>
<span> Angle PRQ measures 30°.</span><span> Angle PRQ measures 15°.</span><span> Angle PQR measures 15°.</span><span> Angle PQR measures 45°.</span>
<em>A promise that William Travis made in his letter written from inside the Alamo on February 24th was;</em>
D. To never surrender or retreat
<u>"</u><em><u>The enemy has demanded a surrender at discretion, otherwise, the garrison are to be put to the sword, if the fort is taken. I have answered the demand with a cannon shot, and our flag still waves proudly from the walls. </u></em><em><u>I shall never surrender or retreat.</u></em><u>"</u>
