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Agenda:1. Topic 42
Housekeeping:1. Please keep our room clean :)2. Please do not pack up early... you miss info.
Today you will need:> a calculator> pencil
Assignment tonight:> MathXL 42
no internet? try...
4.2 pg. 164 #15, 1823, 25, 27, 2931
Learning Target
42 I can apply theorems about isosceles and equilateral triangles to solve problems.
42 Isosceles and Equilateral TrianglesIsosceles Triangle
Equilateral Triangle
True or False? Every equilateral triangle is an isosceles triangle.
At least 2 = sides~ 3 = sides~
measuring activity
Find the measures of the missing angles.
1. 2.
81o
3.
1.
3.
Find the value of x.
2.
Pythagorean Theorem Review
a2 + b2 = c2
When you know 2 sides of a right triangle and are trying to find the 3rd side.
A B
C
D
10 in
6 in
a. Find CD.
b. Find the perimeter of triangle ABC.
A B
C
D
10 in
6 in
Equilateral Triangles
Equilateral
Equiangular
Find the measure of angle C
12 cm
A prefabricated house is delivered to a foundation in two symmetric halves that are assembled onsite. Along the planned route to the site, the truck must pass under a bridge that has a clearance height of 17 feet. Should the trucker plan a different route for delivering the house? Explain.