NCEA Level 1 Angle Rules

Question	Answer
Image: 3535ad47-a095-434d-a088-50deec2b3580 (image/png)	Alternate angles on parallel lines are equal
Image: 1ff72f7c-5aaf-412f-b221-e75564a25641 (image/png)	Co-interior angles on parallel lines add to 180°
Image: 3adfb553-98f4-4624-a535-1ad0af537917 (image/png)	Corresponding angles on parallel lines are equal
Image: 887c293c-d2a1-4aed-a537-0c10919a02c8 (image/png)	Angles on a line add up to 180°
Image: 2d5641db-f2cd-43da-b19a-45baa01eef91 (image/png)	Angles at a point add up to 360°
Image: f16700db-461b-41f9-a084-22f6a51479ba (image/png)	Interior angles of a quadrilateral add to 360°
Image: 866d65b2-0116-43d1-ba05-54c0998a123a (image/png)	Interior angles of a triangle add up to 180°
Image: 60c9b4e4-127a-48b0-ba5b-db63073b14b2 (image/png)	Vertically opposite angles are equal
Image: f338240f-7da6-4301-978a-00ad9b09fb08 (image/png)	Base angles of an Isosceles triangle are equal
Image: c81002dd-d651-4c82-9281-3dbb04736d05 (image/png)	Reflex angles are more than 180°
Image: 905f33ca-11ff-41e3-8bcd-927830827920 (image/png)	A Bearing is the angle measured from North, clockwise
Image: 8912d4f5-b43f-4b4c-8ba5-e65882bb0109 (image/png)	Vertex
Image: 29afb0f9-4e67-4e29-959d-8f4bb07b17ac (image/png)	Intersection
Image: 16e23602-f7cf-4450-96fe-4e25e5054fc4 (image/png)	Triangular Prism
Image: 45e85ad9-6686-4878-b7de-99fe995109d9 (image/png)	Cylinder (circular prism)
Image: b6711397-1f5e-4603-b098-f2ad3879f4c0 (image/png)	Cuboid (rectangular prism)
Image: 9c814af2-b2b5-4b08-9f6b-b2099a64bfe2 (image/png)	Rhombus
Image: 33a158fe-3d0d-43bd-a846-515a13f0cb3b (image/png)	Trapezium
Image: 36a36c20-0f84-465b-accf-bf50c41ad5ec (image/png)	Parallelogram
De Image: 4ceb9afb-939c-4395-b4be-4ea56ea2c05f (image/png)	(Regular) Octagon
Image: 936d723b-6df2-4cef-b917-ba82f1dea74e (image/png)	(Regular) Hexagon
Image: 838694ca-00b6-43a8-96ba-5ae64ae751bd (image/png)	(Regular) Pentagon
Image: 9438a6db-94cc-485b-8c0d-bfae9eb16f8f (image/png)	Equilateral Triangle
A line at 90° to another line Image: ab29ea1c-f099-4b99-a3c2-3b527f093876 (image/png)	Perpendicular
Image: 5ef09811-74cc-4744-9209-153ed890f4f1 (image/png)	A triangle formed from the centre to edge is isosceles (so base angles are equal)
Image: 4141e13e-e8e3-43ab-af03-8460067b7471 (image/png)	A Tangent to a circle is at 90° to a radius it meets
Image: 214b7411-3f8f-4678-9dd8-bb8caa0b2d20 (image/png)	The angle formed from the ends of a diameter to the edge is 90°
Rule for finding the sum of the interior angles of any polygon	180° × (sides – 2)
Image: 50aa78c1-d91b-4f40-87cb-a545d4b7fdc1 (image/png)	The Exterior angles of any polygon add to 360°
Similar shapes	Have the same angles and sides are in a common ratio (there is an scale factor of enlargement)
Image: 43bcee02-0977-4ff0-b055-6ba1a0692beb (image/png)	An angle at the centre from two edge points is twice the angle from them to the edge
Image: c1e75d35-de1f-48e1-a374-dfb3e47328e2 (image/png)	Opposite angles of Cyclic Quadrilaterals add to 180°
Image: d7cef269-4f1b-4d02-a43e-0d27752bf578 (image/png)	Angles from the ends of the same arc to the outside are equal
Image: 10b7c3c3-c0fe-49a4-a6ba-967a44d935cc (image/png)	Chord and Arc

Image: 3535ad47-a095-434d-a088-50deec2b3580 (image/png)

Alternate angles on parallel lines are equal

Image: 1ff72f7c-5aaf-412f-b221-e75564a25641 (image/png)

Co-interior angles on parallel lines add to 180°

Image: 3adfb553-98f4-4624-a535-1ad0af537917 (image/png)

Corresponding angles on parallel lines are equal

Image: 887c293c-d2a1-4aed-a537-0c10919a02c8 (image/png)

Angles on a line add up to 180°

Image: 2d5641db-f2cd-43da-b19a-45baa01eef91 (image/png)

Angles at a point add up to 360°

Image: f16700db-461b-41f9-a084-22f6a51479ba (image/png)

Interior angles of a quadrilateral add to 360°