Classifying Triangles
Angle Relationships
Missing Angles
Similar Triangles
Exterior/Interior Angles
100
This triangle has sides that measure 15,16 and 17.
What is a scalene triangle?
100
These angles have a sum of 90 degrees.
What are complementary angles?
100
A triangle has angles with the measure of 100° and 55°. What is the measure of the 3rd angle?
What is 55°?
100
This theorem has 2 triangles with 3 proportional sides.
What is side-side-side similarity?
100
These are inside angles on the same side of the transversal that are supplementary.
What are same-side interior angles?
200
This type of triangle has three angles that each measure 60 degrees and each side measures 10 units.
What is acute equilateral?
200
These angles have the same measurement.
What are congruent angles?
200
A triangle has angles with the measure of 15° and 25°. What is the measure of the 3rd angle?
What is 140°?
200
This theorem states that 2 triangles have two pairs of congruent angles.
What is angle-angle similarity?
200
These are two interior angles on opposite sides of the transversal that are congruent.
What are alternate interior angles?
300
This type of triangle has 3 angles that measure 145, 15 and 20.
What is an obtuse triangle?
300
These angles are side by side and may or may not be congruent.
What are adjacent angles?
300
A triangle has angles with the measure of 10° and 138°. What is the measure of the 3rd angle?
What is 32°?
300
This theorem says that 2 triangles have two pairs of proportional sides and congruent angles between them.
What is side-angle-side similarity?
300
Name this type of angle relationship.
What are alternate exterior angles?
400
This triangle has a 90 degree angle and two sides that measure 32 units each.
What is a right isosceles?
400
These two angles are formed by intersecting sides and are always congruent.
What are vertical angles?
400
A triangle has angles with the measure of a°, 3a°, and 2a°. Solve for a.
What is a = 30° ?
400
These two triangles have this type of similarity.
What is angle-angle similarity?
400
Name this type of angle relationship.
What are corresponding angles?
500
This triangle has three sides that are congruent and three angles that are congruent.
What is an equiangular equilateral triangle?
500
These 2 angles have a sum of 180 degrees.
What are supplementary angles?
500
A triangle has angles with the measure of (c-20)°, c°, and (c-10)°. Solve for c.
What is c = 70° ?
500
These two triangles have this type of similarity.
What is side-angle-side similarity?
500
These types of angle relationships are congruent.
What are corresponding angles, alternate exterior angles and alternate interior angles?