First Monthly Examination in Mathematics

A triangle which has three equal sides.

• Vertex

• Angle

• Right triangle

• Equilateral triangle

A triangle which has two equal sides.

• Right triangle

• Isosceles triangle

• Angle

It is a close figure with three sides, vertices, and angles.

• Quadrilateral

• Vertex

• Triangle

A triangle with no equal sides.

• Scalene triangle

• Equilateral triangle

An instrument used to measure the number of degrees in an angle.

• Straight angle

• Obtuse triangle

• Ruler

• Reflex angle

• Protractor

It has two rays that meet at an endpoint.

• Degree

• Protractor

• Compass

• vertex

It measures exactly 180 degrees.

• Obtuse angle

• Right angle

• Scalene triangle

• Triangle

Two straight lines on the same plane which never intersect each other and equally distant from each other.

• Parallel lines

• Intersecting lines

• Perpendicular lines

• lines

It is the biggest angle. It measures more than 180 degrees but less than 360 degrees.

• Obtuse angle

• Right angle

• Reflex angle

• Straight angle

mA = 110°, m B = 40°, m C = 30°