Cards in this guide (16)
A rule that is accepted true without proof
A rule or a statement that is accepted without proof is a
postulate.
Isosceles triangles may be obtuse or acute but never right
What is the greatest number of right angles that a triangle can contain
1 (APEX)
A triangle is formed by three lines. If the ends of two lines
meet to form a right-angle (90 degrees), the third line can only
form angles less than 90 degrees.
90 + 45 + 45 = 180 the three angles must total 180 degrees.
Are some isosceles triangles equilateral triangles
Yep. All equilateral triangles are isosceles triangles.
True or false A corollary is a statement that can be easily proved using a theorem
For Apex the answer is “True“.
To begin an indirect proof you assume the converse of what you intend to prove is true
Isosceles triangles can be acute or obtuse true or false
Some triangles can have more than one obtuse angle
Triangle has two sides of length 4 and 15 What value could the length of the third side be
The third side must be longer than 11 and shorter than 19.
What is the statement of the triangle inequality theorem
Which of the following is the statement of the Triangle Inequality Theorem
The sum of the lengths of any two sides of a triangle is greater
than the length of the third side.
Complete this sentence after a congruence transformation the area of a triangle would be it was before
This sentence can be complete as: After a congruence
transformation the area of a triangle would be the same as it was
before.
Which is a true statement about a exterior angle of a triangle
180 degrees minus interior angle = exterior angle and that the 3
exterior angles of a triangle add up to 360 degrees.
Which term best describes a mathematical statement of the form shown below if athen b
A triangle has sides measuring 8 inches and 12 inches. If x represents the length in inches of the third side which inequality gives the range of possible values for x
If two line segments have the same length must be true
