Worked out problems from 5.25.3 Worksheet
Transcript of Worked out problems from 5.25.3 Worksheet
Worked out problems from 5.25.3 Worksheet
Mastery ObjectiveYou will be able to:• Recognize polygons.• Identify special types of quadrilaterals.
Language Objective• Understand vocabulary related to quadrilaterals.
5.4 FourSided Polygons
Polygons Not polygons
ThinkPairShareConsider the following examples. Decide on the definition for a polygon.
Polygon: 3 or more segments (straight lines) that connect endtoend (make vertices), are never broken, and never cross
Example
Naming Polygons
F
U
YK
N
Convex ConcaveNo vertex on the polygon is caved in. Every interior angle measure is less than 180o
At least one vertex on the polygon is caved in. At least one interior angle measure is greater than 180o.
ThinkPairShareConsider the following examples. Decide on the definitions for convex and concave.
Consecutive Angles are right next to each other.
Diagonals are segments that connect nonconsecutive angles.
Both pairs of opposite sides parallel.
• Parallelogram
QuadrilateralA foursided polygon
Special quadrilaterals:
• RectangleSpecial parallelograms:
At least one angle is a right angle.
• RhombusAt least two consecutive sides are congruent.
• SquareBoth a rectangle and a rhombus.
Two disjoint pairs of consecutive sides are =.
• Kite
~
A quadrilateral with exactly (not more than) one pair of parallel sides.
base angles
A trapezoid with congruent legs.
• Trapezoid
• Isosceles Trapezoid
Homework
5.4 p237 #1 3, 6, 8, 9, 11, 12, 16, 19, 20