Ontario 09 Academic (MPM1D)
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Exterior angle sum and other calculations

Interactive practice questions

Let $x$x be the sum of the exterior angles in this triangle. Show that $x=360$x=360.

Easy
Approx 7 minutes
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Consider the image attached.

Find $x$x giving reasons.

Consider the adjacent figure.

Find the value of $x$x, giving reasons.

Consider the adjacent figure.

Find the value of $x$x, giving reasons.

Outcomes

9D.MG3.01

Determine, through investigation using a variety of tools and describe the properties and relationships of the interior and exterior angles of triangles, quadrilaterals, and other polygons, and apply the results to problems involving the angles of polygons

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