Geometry Definitions

When a line intersects 2 parallel lines, the sum of the interior angles (a & b) will equal how many degrees?

What type of triangle is pictured here?

• Right-Angled

• Scalene

• Equilateral

• Isosceles

This is a right angled triangle.

Circle all the interior right angles you can identify.

TRUE or FALSE: all 3 sides on an equilateral triangle are of equal length.

• True

• False

The sum of all the interior angles in a quadrilateral equal how many degrees?

White of the following quadrilateral shapes is a trapezium?

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• 
• 
• 

How many sides does heptagon have?

• 5

• 6

• 7

• 8

Which of the below shapes is a hendecagon

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• 
• 
• 

What type of shape uses the following formula to calculate the sum of it's interior angles?

180(n-2)

Perpendicular lines meet at what angle?

• 45°

• 70°

• 90°

• 180°