Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. The legs of the isosceles triangles to the right are the same length. Are these triangles congruent (same size and shape)? Nah 2. The isosceles triangles to the right have congruent legs and bases. A. Are these triangles congruent? B. When two triangles are congruent, what do you know about their angles? They Will all have caval sides Gizmo Warm-up If triangles have three pairs of congruent corresponding sides, then the triangles are A congruent. In the Constructing Congruent Segments and Angles Gizmo TM, first you will construct congruent segments. Then you will create congruent angles by constructing O congruent isosceles triangles. You will use a straightedge and a compass to complete the constructions. To begin, select Construct a congruent segment from the dropdown menu to see the Gizmo straightedge. 1. Drag the endpoint of the straightedge until it snaps onto point C. Then drag the other point on the straightedge around. What happens? 2. Click Continue. The circle that appears is the Gizmo compass. The center of the circle represents the "point" of the compass, and the point on the circle represents the "pencil" that can draw a circle. Place the point of the compass on point C. Drag the point on the circle. What happens to the radius