Equilateral triangle: all sides are equal lengths, all angles are equal too
Scalene triangle: has three different sides, all angles are different
Isosceles triangle: 2 sides are equal, one isn’t, 2 angles are the same, one is different
Acute triangle: angles are less than 90 degrees
Obtuse triangle: angles are larger than 90 degrees
Right triangle: angle forms a 90 degree angle
Those are the triangles :)
Answer:
<em>DAC=18(corresponding angles)</em>
<em>EAD= 162 degrees</em>
Step-by-step explanation:
<em>DAC=18(corresponding angles)</em>
EAD=180-18(angles on a straight line)
<em>EAD= 162 degrees</em>
<span>The difference of the vectors; sample: the other diagonal would be the sum of one of the vectors and the opposite of the other vector, so it would be the difference.
</span>
