A scalene triangle has 3 sides of different lengths and 3 unequal angles. An isosceles triangle has 2 sides of equal length. The dashes on the lines show they are equal in length. The angles at the ...
It's one of those things most people remember from their school days. The angles in a triangle always add up to 180Ëš. And a right-angled triangle always has one angle that is 90°, so the other two ...
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