Classifying Triangles and Their Measures

What does an equiangular triangle signify?

• One angle is exactly 90 degrees

• All angles are of equal measure

• All sides are of equal length

• All angles are less than 90 degrees

What defines a scalene triangle?

• All angles are equal

• One angle greater than 90 degrees

• Two sides of equal length

• All sides of different lengths

How is an isosceles triangle characterized?

• No congruent sides

• All sides are congruent

• All angles are acute

• At least two sides are congruent

What type of triangle has one angle measuring 100 degrees?

• Equilateral

• Right

• Acute

• Obtuse

If a triangle has sides measuring 9, 6, and 12 units, what type of triangle is it based on its sides?

• Acute

• Isosceles

• Equilateral

• Scalene

According to the Triangle Angle Sum Theorem, what is the sum of the interior angles of a triangle?

• 360 degrees

• 90 degrees

• 180 degrees

• 270 degrees

If two angles of a triangle are 35 and 65 degrees, what is the measure of the third angle?

• 40 degrees

• 80 degrees

• 100 degrees

• 120 degrees

In a triangle with angles measuring 21 and 104 degrees, what is the measure of the third angle?

• 55 degrees

• 45 degrees

• 35 degrees

• 65 degrees

What is the measure of an exterior angle if one of its remote interior angles is 60 degrees and the other is 80 degrees?

• 60 degrees

• 140 degrees

• 180 degrees

• 20 degrees

What theorem states the sum of the measures of the two remote interior angles equals the measure of the exterior angle?

• Pythagorean Theorem

• Triangle Sum Theorem

• Triangle Exterior Angle Theorem

• Law of Sines