Closing Activity: is shown below. Is it an equilateral triangle? Justify your response. Lesson 3: Copy and Bisect an Angle Opening Vocab: Plane- A flat _____________ on which a straight line joining any two points on it would wholly lie. Half Plane- Part of the plane on one side of a straight line of infinite length in the plane. Angle- The union of two non-collinear rays with the same endpoint Interior of an Angle- The interior of angle is the set of points in the intersection of the half-plane of that contains and the half-plane of that contains . The interior is easy to identify because it is always the region of the “smaller” two regions defined by the angle (the region that is convex). The other region is called the exterior of the angle.
Closing Activity: is shown below. Is it an equilateral triangle? Justify your response. Lesson 3: Copy and Bisect an Angle Opening Vocab: Plane- A flat _____________ on which a straight line joining any two points on it would wholly lie. Half Plane- Part of the plane on one side of a straight line of infinite length in the plane. Angle- The union of two non-collinear rays with the same endpoint Interior of an Angle- The interior of angle is the set of points in the intersection of the half-plane of that contains and the half-plane of that contains . The interior is easy to identify because it is always the “smaller” region of the two regions defined by the angle (the region that is convex). The other region is called the exterior of the angle.
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