Presentation on theme: "Session 55 Draw six segments that pass through every dot in the figure without taking your pencil off the paper."— Presentation transcript:
1 Session 55Draw six segments that pass through every dot in the figure without taking your pencil off the paper.
2 Go over testThe easiest thing to do is to plug in 1 and -1 (or 2 and -2)if you get the same y, then it’s Even.If you get the opposite y, then it’s Odd.If you get different y’s, then it’s Neither.
3 Unit 5 VocabularyThe easiest thing to do is to plug in 1 and -1 (or 2 and -2)if you get the same y, then it’s Even.If you get the opposite y, then it’s Odd.If you get different y’s, then it’s Neither.
4 AngleA figure formed by 2 rays with a common endpoint.The angle is
5 CircleThe set of points on a plane at a certain distance, or radius, from a single point, the center
6 Perpendicular Line Two lines that intersect at a right angle (90°). Written as
7 Parallel LineLines in a plane that either do not share any points and never intersect, or share all points.Written as
8 Line SegmentA line with two endpoints.Written as
9 Point An exact position or location in a given plane. Point A or Point B
10 LineThe set of points between points P and Q in a plane and the infinite number of points that continue beyond the points.Written as
11 Distance along a lineThe linear distance between two points on a given line.
13 Acute AngleAn angle measuring less than 90° but greater than 0°.
14 Obtuse AngleAn angle measuring greater than 90° but less than 180°.
15 One-to-OneA relationship wherein each point in a set of points is mapped to exactly one other point.
16 Pre-imageThe original figure before undergoing a transformation.
17 ImageThe new, resulting figure after a transformation
18 IsometryA transformation in which the preimage and image are congruent.
19 Every segment is congruent to its image. Transformations are called RIGID if every image is congruent to its preimage.Rigid transformations can also be referred to as an ISOMETRY.Every segment is congruent to its image.
20 Which of the following are rigid transformations? (Isometry)
21 Isometries not only preserve lengths, but they preserve angle measures parallel lines, and betweenness of points
22 Find the value of each variable, given that the transformation is an isometry.
23 CongruentFigures are congruent if they have the same shape, size, lines, and angles.
24 Similar TrianglesTriangles are similar if they have the same shape but have different sizes.