SS6.1
Demonstrate understanding of angles including:
  • identifying examples classifying angles
  • estimating the measure
  • determining angle measures in degrees
  • drawing angles
  • applying angle relationships in triangles and quadrilaterals.

[C, CN, ME, PS, R, V]

Indicators for this outcome
(a)

Observe, and sort by approximate measure, a set of angles relevant to self, family, or community.

(b)

Explore and present how First Nations and Métis peoples, past and present, measure, represent, and use angles in their lifestyles and worldviews.

(c)

Describe and apply strategies for sketching angles including 0°, 22.5°, 30°, 45°, 60°, 90°, 180°, 270°, and 360°.

(d)

Identify referents for angles of 45°, 90°, and 180° and use the referents to approximate the measure of other angles and to classify the angles as acute, obtuse, straight, or reflex.

(e)

Explain the relationship between 0° and 360°.

(f)

Describe how measuring an angle is different from measuring a length.

(g)

Measure angles in different orientations using a protractor.

(h)

Describe and provide examples for different uses of angles, such as the amount of rotation or as the angle of opening between two sides of a polygon.

(i)

Generalize a relationship for the sum of the measures of the angles in any triangle.

(j)

Generalize a relationship for the sum of the measures of the angles in any quadrilateral.

(k)

Provide a visual, concrete, and/or oral informal proof for the sum of the measures of the angles in a quadrilateral being 360° (assuming that the sum of the measures of the angles in a triangle is 180°).

(l)

Solve situational questions involving angles in triangles and quadrilaterals.

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