The student will a) classify triangles as right, acute, or obtuse and equilateral, scalene, or isosceles; and b) investigate the sum of the interior angles in a triangle and determine an unknown angle measure.

- Measurement and Geometry

The student will a) classify triangles as right, acute, or obtuse and equilateral, scalene, or isosceles; and b) investigate the sum of the interior angles in a triangle and determine an unknown angle measure.

- Measurement and Geometry

Virginia DOE

Last updated:

2016-12-27 11:39:36

Resources cannot be aligned to this standard, browse sub-standards to find lessons.

- This standard is part of: Measurement and Geometry
- This standard is derived from: MG.5.13.a

Finer grained standards that are part of this one

Angles can be classified as right, acute, obtuse, or straight according to their measures.

Virginia DOE

Last updated:

2016-12-27 11:40:12

A triangle can be classified as right, acute, or obtuse according to the measure of its largest angle.

Virginia DOE

Last updated:

2016-12-27 11:41:00

Triangles may also be classified according to the measure of their sides, e.g., scalene (no sides congruent), isosceles (at least two sides congruent) and equilateral (all sides congruent).

Virginia DOE

Last updated:

2016-12-27 11:41:11

An equilateral triangle (with three congruent sides) is a special case of an isosceles triangle (which has at least two congruent sides).

Virginia DOE

Last updated:

2016-12-27 11:41:20

Triangles can be classified by the measure of their largest angle and by the measure of their sides (i.e., an isosceles right triangle). [Graphic cannot be reproduced.]

Virginia DOE

Last updated:

2017-01-12 13:57:02

Standards with the same topic and subject but for other grades

One way to explore attributes is to investigate non-examples (e.g., a triangle could be a non-example in a sort of rectangles and circles).

Virginia DOE

Last updated:

2016-12-29 08:21:17

An angle is formed by two rays that share a common endpoint called the vertex. Angles are found wherever lines or line segments intersect.

Virginia DOE

Last updated:

2016-12-21 07:30:01

The edge is the line segment where two faces of a solid figure intersect.

Virginia DOE

Last updated:

2016-12-21 08:21:44

A vertex is a point at which two or more lines, line segments, or rays meet to form an angle. In solid figures a vertex is the point at which three or more edges meet.

Virginia DOE

Last updated:

2016-12-21 07:27:37

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