180 degrees - How many degrees are in all triangles?, Equilateral - A triangle with three 60 degree angles and three equal sides, Isosceles - A triangle with two equal angles and two equal sides, Scalene - A triangle with no equal angles and no equal sides, x + 55 + 40 = 180 - Which equation can be used to find x?, 5x + 5 = 180 - Which equation can be used to find x?, 2x + 30 = 180 - Which equation can be used to find x?, x + 60 = 180 - Which equation can be used to find x?, Vertex angle - What kind of angle is the red angle?, Base angle - What is the name of each red angle?,

Angles in triangles

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