Quick Review http://www.brainpop.com/math/geometryandmeasurement/ Geometry, Angles, Parallel and Perpendicular lines Quiz - graded

What does ASA mean? What does SSS mean? What does SAS mean?

Ch. 7-4 Classifying Triangles and Quadrilaterals Acute Triangle has 3 acute angles Obtuse Triangle has one obtuse angle Right Triangle has one right angle Equilateral Triangle has 3 congruent sides Isosceles Triangle has at least two congruent sides Scalene Triangle has no congruent sides

Example 1: Classify each triangle below Example 1: Classify each triangle below. Remember to classify them according to their angles and sides. Isosceles Obtuse Triangle Scalene Right Triangle Acute Equilateral Triangle

Exactly one pair of parallel sides Parallelogram: Quadrilateral: 4 sides Trapezoid: Exactly one pair of parallel sides Parallelogram: Both pairs of opposite sides parallel Rectangle: 4 right angles Rhombus: 4 congruent sides Square: 4 right angles and 4 congruent sides

Example 2: Classify each quadrilateral below with its best name. The quadrilateral has 2 pairs of sides that are parallel and all of its sides congruent Therefore, the best classification would be a rhombus The quadrilateral has 2 pairs of sides that are parallel and 4 right angles Therefore, the best classification would be a rectangle The quadrilateral has exactly 1 pair of sides that are parallel Therefore, the best classification would be a trapezoid

Example 3: See if you can name all shapes shown in the picture that were discussed in this lesson There are 3 isosceles acute triangles: the pine trees and the roof There are 7 rectangles: the chimney, the NEW sign, the middle fence, the 3 windows, and the door There is one trapezoid: the bottom part of the chimney There is one square: the house itself

HW – Pg. 320 Problem #’s 1-7 all, 8-18 even