Download Core Standard: 3.3 Geometry and Measurement Score Reporting

Mathematics, Grade 3
Core Standard: 3.3 Geometry and Measurement
Describe and analyze properties of two-dimensional shapes, including perimeters.
Score Reporting Category 3
It is essential that these standards be addressed in contexts that promote problem solving, reasoning, communication, making connections, and
designing and analyzing representations.
Content Standard:
Boundaries of Assessable Content:
3.3.2 Identify, describe, compare,
analyze, and informally classify
triangles by their sides and angles.
Assessable Academic Vocabulary:
acute angle
congruent
degrees
equiangular
equilateral
isosceles
legs
obtuse angle
right angle
right triangle
scalene
side
triangle (triangular)
vertex (vertices)
Items assessing this standard require
students to classify triangles informally by
their sides and angles. Students will identify
the number of congruent sides in a triangle,
and will use the words scalene, isosceles, or
equilateral to describe a triangle. (Students
should know that an equilateral triangle is
also an isosceles triangle.)
Items will ask students to identify a drawn
triangle from its written description, describe
a triangle from a drawing, compare triangles,
analyze a triangle or a description of a
triangle (e.g., is it possible to have a right
triangle with three congruent sides?), and
classify a triangle based on its drawing.
Symbols and Notation:
Content Connections from Previous Grades:
congruency marks for sides:
1.3
Sample Items:
Which two triangles have the same shape?
(A question about the number of angles
and/or sides in a triangle.)
(Which is not a triangle? Include pictures of
triangles and then one with curved legs like
this.)
right angle
Mathematics Test Specifications
and Test Blueprints
21
Oregon Department of Education
Office of Assessment and Information Services