Presentation on theme: "Show how it is possible for two triangles to intersect in one"— Presentation transcript:
1 Show how it is possible for two triangles to intersect in one Warm-up 1.4 PolygonsDraw pictures to go with the description given.Show how it is possible for two triangles to intersect in onepoint, two points, three points, four points, five points, or sixpoints, but not seven points. Show how they can intersect ininfinitely many points
8 A ____________ is a regular quadrilateral. 1.4 Polygons and MidpointA polygon is a closed plane figure made up of at least 3 lines.Names of polygons:A_________________ is a polygon in which all angles and sides are congruent. It is equilateral and equiangular.A ____________ is a regular quadrilateral.
9 Naming Polygons concave and convex Determine if each of the following is a polygon. Then state all the names that apply.A diagonal is …
10 Congruent PolygonsIf polygons are congruent then the corresponding sides and angles are congruent.When stating two polygons are congruent the order of the lettersmatter.
12 Coordinate Grid Problems Example 5: What is the perimeter of a rectangle with vertices atA (-5, 1) B ( 0,1) C (-5, -3) and D (0, -3)Example 6: Plot the points F (-8, 0) G (0,8) and H (2, 0).Connect them to make a triangle.Find the midpoints of each of the three sides.Label the points and connect them.
13 Common Mistakes on Quiz Homework: Pg 56 – 58 (1.4) #1- 20#1- 3, #11 and 122 pts each