Angles and Triangles

What is an acute angle?

• An angle between 90 and 180 degrees

• A 90 degree angle

• An angle that is less than 90 degrees

• An angle larger than 180 degrees

An angle, which is between 90 and 180 degrees, is called...

• an acute angle.

• an obtuse angle.

• a right angle.

• a reflex angle.

A right angle is 80 degrees.

• True

• False

Can you identify this angle?

• Acute

• Obtuse

• Right angle

• Reflex

What type of angle is larger than 180 degrees?

• Acute

• Obtuse

• Reflex

• Right Angle

What type of angle is this?

• Acute

• Reflex

• Right Angle

• Obtuse

If I combined these two angles, what type of angle wouldngle it be?

• Right angle

• Obtuse angle

• Straight line

• Acute angle

What type of triangle has all sides of the same length?

• Equilateral

• Scalene

• Isosceles

• Right Angled

A scalene triangle has...

• all sides of different length

• all sides which are the same length

• 2 sides which are the same length

A triangle where only two sides are the same length is called...

• scalene

• equilateral

• isosceles

• right angled