
Triangle and Quadrilateral Angles
7th Grade · Math · 60 min· Demonstrate That The Angle Sum Of A Triangle Is 180â° And Use This To Find The Angle Sum Of A Quadrilateral
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Learning Objective
I can determine the angle sums of triangles and quadrilaterals.
- 1
A triangle is a shape with three sides and three angles, and the sum of its interior angles is always 180 degrees.
- 2
Triangles can be classified by their angles (right, acute, obtuse) or by their sides (equilateral, scalene, isosceles).
- 3
The sum of the interior angles of a quadrilateral is 360 degrees, which can be shown by dividing it into two triangles.


