isosceles and equilateral triangles a
angles
angles
Angles of Triangles
Congruence Statements
Isosceles and Equilateral Triangles vocabulary
Isosceles Triangles sides
100
Find the value of x
55
100
c
100
Write a congruence statement for the two triangles below.
△RST≅△FED
100
Has two congruent sides called legs.
Isosceles Triangle
100
True or False: This triangle is isosceles.
True
200
Calculate the value of x
x=9
200
Solve for x.
x=69o
200
Use the diagram to identify which side is congruent to CB.
NL
200
All three sides are congruent.
Equilateral Triangle
200
True or False: This triangle isosceles.
False
300
Calculate the value of x
Note: m<2 means angle 2
x=-9
300
Solve for x
x=25
300
Suppose △ADG≅△BCE. What angle is congruent to ∠G?
∠E
300
The angle measure for an equilateral triangle
60 degrees
300
If a triangle has side measures of 6, 4, and 6, is it considered isosceles?
Yes
400
Solve for x and y
x=60
y=25
400
Solve for x
C
400
Suppose △INT≅△WEB. What angle is congruent to ∠W?
∠I
400
What is the name for the congruent angles in an isosceles triangle?
base angles
400
Would a triangle with side measurements of 12, 24, and 18 be considered isosceles?
No
500
Calculate the value of x
x=7
500
Solve for the exterior angle.
136o
500
Given that triangle ABC is congruent to triangle DEF, solve for y
y=35
500
The point where two congruent legs come together.
Vertex Angle
500
Solve for x
x=14