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Geometry
Notes
Name_________________________
Isosceles and Equilateral Triangles
Isosceles Triangle
legs –
vertex angle –
base –
base angles –
Basic idea…
Equilateral Triangle
Basic ideas…
*ALL three angles in an equilateral/equiangular will always measure _________________!
Examples 1 – 6: Find the value of each variable.
1.
2.
3.
4.
5.
6.
5x + 5
17
35
Examples 7 – 9: Find the value of each variable.
7.
8.
(11y - 6)
x
(13x - 2)
(7x + 19)
9y
9.
10. Find the perimeter of the triangle.
(4x + 3) m
(8x - 15) m
(5x + 8) m
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