P6/1 Types of triangle and their properties

A ___________________ is a closed figure made up of three (3) line segments.

• Square

• Triangle

• Rectangle

• Rhombus

A triangle having three equal sides and three equal angles is called ________________________.

• Isosceles triangle

• Scalene triangle

• Equilateral triangle

• Right-angled triangle

A triangle having two equal sides and two equal angles (base) is called ___________________.

• Isosceles triangle

• Scalene triangle

• Equilateral triangle

• Acute-angled triangle

A triangle having all sides unequal or not equal sides is called ____________________.

• Isosceles triangle

• Scalene triangle

• Equilateral triangle

• Rectangle

A triangle having three (3) acute angles is called ___________________________.

• Acute-angled triangle

• Right-angled triangle

• Obtuse- angled triangle

• Trapezium

A triangle having one (1) right angle is called ___________________________.

• Acute-angled triangle

• Right-angled triangle

• Obtuse-angled triangle

• Trapezium

A triangle having one (1) obtuse angle is called __________________________.

• Acute-angled triangle

• Right-angled triangle

• Obtuse-angled triangle

• Trapezium

Each angle of an equilateral triangle is equal to ______^o.

• 45^o

• 60^o

• 90^o

• 100^o

Acute angle is __________ __________ 90 ^o.

• smaller than

• greater than

• equal to

• unequal to

Acute angle is between ______^o to ______ ^o.

• 0^o to 89^o

• 91^o to 179^o

• 0^o to 45^o

• 85^o to 180^o