InkLoop/NYS Standards/NY-G.CO.10NY-G.CO.10
GeometryCongruence60 target questions
Prove theorems about triangles: the triangle angle-sum theorem; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; medians of a triangle meet at a point.
Sample Practice Questions (3)
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In , and are the midpoints of and , respectively. If , what is ?
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Multiple choice · diagramSee Answer + Explanation →
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NY-G.CO.1Know precise definitions of angle circle perpendicular line parallel line and line segment based on the undefined notions of point line distance along a line and distance around a circular arc.→NY-G.CO.2Represent transformations in the plane; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not.→NY-G.CO.3Given a rectangle parallelogram trapezoid or regular polygon describe the rotations and reflections that carry it onto itself.→NY-G.CO.4Develop definitions of rotations reflections and translations in terms of angles circles perpendicular lines parallel lines and line segments.→