Angle Facts

What do the internal angles add up to in a triangle?

• 90 degrees
• 180 degrees
• 45 degrees

• 360 degrees

What do internal angles in a quadrilateral add up to?

• 540 degrees

• 180 degrees
• 360 degrees
• 90 degrees

Angles in a straight line add up to...

• 360
• 180
• 90
• 270

Angles round a point add up to...

• 90 degrees
• 360 degrees
• 270 degrees
• 180 degrees

Which of these is not a polygon?

• Hexagon

• Triangle
• Circle
• Octagon

What is the formula for calculating internal angles in polygons?

• (n-1) x 180 degrees

• (n+2) x 180 degrees

• (n-2) x 180 degrees

• π x r²

What is the formula for calculating external angles in polygons?

• 180 ÷ number of sides

• 360 ÷ number of sides

• 180 x number of sides

• 360 x number of sides

Opposite angles are...

• Equal

• Complementary

• Adjacent

• Parallel

Alternate angles are equal and form what shape?

• F

• U

• Z

Corresponding angles formed by parallel lines make what shape?

• F

• U

• Z