What is a triangle? - A triangle is a polygon with three sides, three angles, and three vertices., What is an angle in a triangle? - An angle in a triangle is one of the three interior angles formed by the intersection of two sides of the triangle., How many angles does a triangle have? - Three angles, How many vertices does a triangle have? - Three vertices., Label the parts of the triangle: sides, angles, and vertices. - Sides: The straight edges of the triangle. Angles: The corners where two sides meet. Vertices: The points where the sides meet.,

Triangle Properties

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