225 + 135 = 360 The sum of interior angles in a triangle is 180Ëš. In an equilateral triangle, all three angles are equal to 60Ëš. To find the missing angles in an equilateral triangle ...
Ben Lovejoy \/ How-To Geek<\/p>\n""> This is an equilateral triangle, where the distance between the two stereo speakers, and between each speaker and the listener, is equal. We also angle the ...