Download Unit 5 – Triangles (cont`d

GEOMETRY Unit 5, Triangles
Notes 5-2, Isosceles Triangle Theorems
Name ________________________
Date __________ Period _________
Isosceles Triangle Parts
Isosceles Triangle Theorem –
Isosceles Triangle Theorem Converse –
For Examples 1– 6, find x and y in each figure.
1.
2.
Notes 5-2
3.
Isosceles Triangle Theorems
4.
x
x
y
126
°
5.
y
6.
Notes 5-2
Isosceles Triangle Theorems
Review of Special Segments in a Triangle:
Review
For problems 1 – 6, find x in each figure below. **Remember: The sum of three angles in any triangle is 180°**
1.
2.
3.
4.
5.
X
48
28
6.
Notes 5-2
Answers –
1) 50
2) 105
10) x = 27, y = 38
Isosceles Triangle Theorems
3) 15
11) 35
4) 45
5) 104
12) 102
6) 27
7) 110
8) x = 7, y = 138
9) 15