Congruency in Isosceles and Equilateral Triangles
Equilateral triangles have all sides
of equal length. In turn, that means
all angles have equal measure.
Congruency in Isosceles and Equilateral Triangles
That relationship can be used to
solve algebraic expressions.
2x + 10 = 60
      - 10  -10
2x = 50
2
x = 25
2
Isosceles triangles have two sidesof equal length. In turn, that meansthe angles opposite those equalsides have equal measure.
Congruency in Isosceles and Equilateral Triangles
That relationship can be used to
solve algebraic expressions.
vertex angle =
180 - 72 - 72 = 36
base angles
8y - 16 = 72    + 16  +16
2y = 88
9x = 36
9
2
y = 44
x = 4
9
2
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
Here are some isosceles and equilateral triangles. Solve for theindicated variable.
Answers are integers.
Congruency in Isosceles and Equilateral Triangles
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