A scalene triangle has 3 unequal sides, so none of the sides are the same. A right triangle has one angle that is 90°, which is indicated by a little square. An isosceles triangle has 2 equal sides (it looks like an ice cream cone). And an equilateral triangle has 3 sides that are all the same.
Ok so for number 1 when you see it with three different set of lines it is scalene. When you see one like number two with two of the same set of lines it is isosceles. When you see one with all three of the same set of lines it is equilateral. So the answers would be 1.d, 2.b, 3.b, 4.a A way to remember this is for isosceles think of it as eyes you have two eyes that are alike. For equilateral all parts are equal. Scalene as a scale(the numbers can be all over the place am I right) for a right triangle it has to have one corner at a 90 degree angle so it makes a square. Brainliest?
<span>-3(1+6r)=14-r -3 - 18r = 14 - r ...expand by using distributive property -3 -17r = 14 ...add (r) to both sides -17r = 17 ...add (3) to both sides r = -1 ....divide both sides by (-17)</span>
