Transparency 11-2. 5-Minute Check on Lesson 11-1. Find the area and the perimeter of each parallelogram. Round to the nearest tenth if necessary. 2. 3. 4.
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5-Minute Check on Lesson 11-1
x + 2
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Lesson 11-2 Day 1
Areas of Triangles
A = ½ * b * h
h is height (altitude)
b is base (┴ to h)
Find the area of triangle RST
Find the area of quadrilateral ABCD if AC = 35, BF = 18, and DE = 10.
Find the area of quadrilateral HIJK if IK = 16, HL = 5 and JM = 9
The formula for the area of a triangle can be used to find the areas of many different figures
Congruent figures have equal areas
Classwork:YOU MUST SHOW WORK!!!!!
pg 605 (5,13, 14, 19, 20, 34, 35)
pg 599 (21-25 and page 605 #7) Plot points first then find the area of each!!!