<h3>Identity to remember . </h3>
<u>☆</u><u> </u><u>We</u><u> </u><u>kno</u><u>w</u><u> </u><u>that</u><u> </u><u>angl</u><u>es</u><u> </u><u>of</u><u> triangle</u><u> </u><u>opposite</u><u> of</u><u> </u><u>its</u><u> </u><u>equa</u><u>l</u><u> </u><u>sides</u><u> </u><u>are</u><u> </u><u>also</u><u> </u><u>eq</u><u>ual</u><u> </u>
Here the information that we know about the given triangle is
So the angles opposite to the equal sides will be equal .
→ So one of those equal angle is x so other will also be x .
☆ Interior angle sum property states that sum of interior angles of triangle will be 180°
→ 80° + x + x = 180°
→ 2x = 180°-80°
→ 2x = 100°
→ x = 100/2
<u>→</u><u> </u><u>x</u><u> </u><u>=</u><u> </u><u>5</u><u>0</u><u>°</u><u> </u><u>.</u>
- <u>So</u><u> </u><u>the</u><u> </u><u>va</u><u>lue</u><u> of</u><u> </u><u>x</u><u> </u><u>is </u><u>5</u><u>0</u><u>°</u><u>. </u><u> </u>