Vertically opposite angles are ?
Vertically opposite angles are equal.
Angles on a straight line add up to ?
Angles on a straight line add up to 180°.
Angles at a point add up to ?
Angles at a point add up to 360°
Angles in a triangle add up to ?
Angles in a triangle add up to 180°
Base angles of an isosceles triangle are ?
Base angles of an isosceles triangle are equal.
Angles in an equilateral triangle are
Angles in an equilateral triangle are equal.
An exterior angle (of a triangle) is equal to the sum of the ? opposite angles
An exterior angle (of a triangle) is equal to the sum of the interior opposite angles.
Angles in a quadrilateral add up to ?
Angles in a quadrilateral add up to 360°
Exterior angles of a polygon add up to ?
Exterior angles of a polygon add up to 360°
The interior and exterior angles of any polygon add up to ?
The interior and exterior angles of any polygon add up to 180°
Alternate angles are ?
Alternate angles are equal.
Corresponding angles are ?
Corresponding angles are equal.
Co-interior angles add up to ?
Co-interior angles add up to 180°
The angle at the centre of a circle is ? the angle at the ?
The angle at the centre of a circle is twice the angle at the circumference
Angles in the same segment are ?
Angles in the same segment are equal
The angle in a semicircle is a ? (or 90 ̊)
The angle in a semicircle is a right angle (or 90 ̊)
Opposite angles in a cyclic quadrilateral add to ?
Opposite angles in a cyclic quadrilateral add to 180
Tangents to a circle from an external point are ?
Tangents to a circle from an external point are equal in length
A tangent to a circle is ? (or 90 ̊) to the radius.
A tangent to a circle is perpendicular (or 90 ̊) to the radius.