Classifying Triangles
Side Lengths
Angle Measures
Congruence
Miscellaneous
100
A triangle with at least two sides that are congruent
What is an isosceles triangle
100
One side of an equilateral triangle is 3, what is the length of the other two sides.
What is 3
100
How many degrees are in a triangle?
What is 180
100
Name the property that states a side length is congruent to itself.
What is the reflexive property
100
What does it mean when two lines are perpendicular?
They create right angles
200
A triangle has side lengths, 12, 13, 5. Classify by sides
What is a scalene triangle
200
The perimeter of an equilateral triangle is 42. What is the length of each side?
What is 14
200
What is the degree measure of any angle in an equilateral triangle?
What is 60 degrees
200
Two geometric figures that are the exact same size and shape are...
What is congruent
200
What is the theorem that states an exterior angle is equal to the sum of the remote interior angles?
What is The Exterior Angle Theorem
300
What is an equilateral triangle?
What is a triangle with three equal sides
300
The lengths of a scalene triangle are x, x + 7, and 2x +3. If the perimeter of the triangle is 30, what is x?
What is x = 5
300
A triangle has angles measuring 120 and 40 degrees. What is the measure of the third angle?
What is 20 degrees
300
Angle P is congruent to angle T and angle T is 73 degrees. What is the measure of angle P?
What is 73 degrees
300
What theorem tells us there are 180 degrees in a triangle?
What is The Triangle Angle Sum Theorem
400
A triangle has angle measures 45, 65, 70. Classify by its angles.
What is an acute triangle
400
An isosceles triangle has 5x + 5 and 2x + 20 as the two congruent sides. Find x and the length of these two sides.
What is x = 5, side lengths = 30
400
Triangle ABC is congruent to triangle DEF. Angle A is 87 degrees and angle D is 5x + 2 degrees. Find x
What is x = 17
400
Angles made by the intersection of any two lines and are ALWAYS congruent are...
What are vertical angles
400
A triangle has angles 120, 30 and 30 degrees. Name this triangle by its angles AND sides
What is obtuse isosceles
500
What makes a triangle obtuse?
What is one angle is larger than 90 degrees
500
An equilateral triangle has side lengths 4x, 3x +15, and 7x -15. Find x AND the length of each side.
What is x = 5, side length = 20
500
The angle measures of a triangle are 2x, 3x, and 55 degrees. Find x
What is x = 25
500
triangle ABC is congruent to triangle DEF. Name the corresponding angles that would be congruent.
What is A = D, B = E, and C = F
500
What does CPCTC stand for?
What is Corresponding Parts of Congruent Triangles are Congruent
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