Angle Sum Theorem
Isosceles Triangle Theorem
Triangle Classification
????
100
The sum of all the angles in a triangle is equal to _____?
180º
100
True or False: The base angles of an isosceles triangle are supplementary.
False. The base angles of an isosceles triangle are CONGRUENT.
100
Classify the triangle by angles.
Acute Triangle
200
Determine the measure of
angle w
w = 30º
200
Given the triangle XVW is an isosceles triangle, what is the value of z?
z=67º
200
Classify the triangle by angles AND sides.
Right, Scalene
300
Solve for s.
s = 27
300
What is the value of u?
u=31º
300
Classify the triangle by angles AND sides.
Obtuse, Isosceles
400
Solve for v.
v = 24
400
What is the value of x + w?
x + w = 144º
400
Draw an example of a right isosceles triangle.
Draw on board
400
Draw an isosceles triangle.
Draw on board
500
A triangle has interior angle measures of (7b+12)°, (11b–9)°, and (18b–3)°. What is the value of b?
b = 5
500
Solve for x.
x = 122º
500
Draw a right equilateral triangle.
NOT POSSIBLE
500
What is the value of y?
y=55º