Topics
7. Geometry
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CanadaON
Grade 8

7.07 Triangles

Lesson
Worksheet
Practice

Interactive practice questions

Select the acute triangle:

A triangle with no tick marks on its sides, indicating that no sides are equal in length. One corner of the triangle has box drawn inside it, indicating a 90 degrees angle.

A

A triangle with no tick marks on its sides, indicating that no sides are equal in length. One of the interior angles measures more than 90° degrees and the other two is less than 90° degrees.

B

A triangle with no tick marks on its sides, indicating that no sides are equal in length. All angles appear to be less than 90 degrees.

C

A triangle with no tick marks on its sides, indicating that no sides are equal in length. One of the interior angles measures more than 90° degrees and the other two is less than 90° degrees.

D
Easy
< 1min

Select the obtuse triangle:

Easy
< 1min

Select the right-angled triangle:

Easy
< 1min

Select the isosceles triangle:

Easy
< 1min
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Outcomes

8.E2.2

Solve problems involving angle properties, including the properties of intersecting and parallel lines and of polygons.

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