Triangle and Angle Properties

The video tutorial covers various geometry concepts, including the angular sum of triangles, the angle sum of a revolution, and angles on parallel lines. It explains how to calculate the perimeter of composite shapes and the circumference of circles. Additionally, it demonstrates finding the height of a triangle given its area.

What is the sum of angles in a triangle?

• 90 degrees

• 180 degrees

• 360 degrees

• 270 degrees

If two angles in a triangle are 90 degrees and 25 degrees, what is the third angle?

• 75 degrees

• 55 degrees

• 65 degrees

• 85 degrees

What is the angle sum of a full revolution?

• 180 degrees

• 270 degrees

• 360 degrees

• 90 degrees

If two angles in a revolution are 90 degrees and 61 degrees, what is the third angle?

• 219 degrees

• 209 degrees

• 199 degrees

• 189 degrees

Which type of angles are equal when formed by parallel lines?

• Corresponding angles

• Adjacent angles

• Supplementary angles

• Complementary angles

What shape is used to identify corresponding angles?

• Z

• F

• C

• N

How do you calculate the perimeter of a rectangle?

• Multiply length by width

• Add all sides

• Double the sum of length and width

• Subtract width from length

What is the perimeter of a rectangle with sides 6m and 7m?

• 13m

• 26m

• 42m

• 20m

What is a shape called when it is made up of two or more simple shapes?

• Symmetrical shape

• Irregular shape

• Complex shape

• Composite shape

If the area of a triangle is 84 cm² and the base is 12 cm, what is the height?

• 12 cm

• 14 cm

• 7 cm

• 10 cm