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Properties of Triangles: Apply your knowledge!

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About this activity

Test your geometry skills and apply the fundamental properties of triangles. Read carefully and choose the correct answer.

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Colombia

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Properties of Triangles: Apply your knowledge!
 

Properties of Triangles: Apply your knowledge!Online version

Test your geometry skills and apply the fundamental properties of triangles. Read carefully and choose the correct answer.

by Diego F. P. Vega
1

If two interior angles of a triangle measure 45° and 65°, what is the measure of the third angle?

2

According to the Triangle Inequality Theorem, which of the following sets of numbers can represent the side lengths of a triangle?

3

In a triangle ABC, angle A is 80°, angle B is 60°, and angle C is 40°. Which side is the longest?

4

You have a right-angled triangle. If the two shorter sides (legs) measure 3 cm and 4 cm, what is the length of the longest side (hypotenuse)?

5

What is the area of a triangle that has a base of 10 meters and a height of 6 meters?

Feedback

(Because 180 - 45 - 65 = 70)

(Because 5 + 7 > 10)

(Using a2 + b2 = c2, so 32 + 42 = 9 + 16 = 25)

Using 1/2×10×6

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