Level 1 Geometry Rules

Description

Flashcards on Level 1 Geometry Rules, created by Tyler Benson on 27/10/2022.
Tyler Benson
Flashcards by Tyler Benson, updated more than 1 year ago
Tyler Benson
Created by Tyler Benson about 3 years ago
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Resource summary

Question Answer
Angles on a line add to 180
Angles at a point add to 360
Vertically opposite angles are equal
Angles in a triangle add to 180
Alternate angles are equal. (They make a 'Z' shape)
Corresponding angles are equal. (They make an 'F' shape)
Co-interior angles add to 180. (They make a 'C' shape)
Triangles in a semi circle are always right angled. (Made with a diameter)
Triangles with two radii are isosceles. The base angles are the same
Angle at the centre is twice the angle at the circumference
Angle at the centre is twice the angle at the circumference
Angles on the same arc are equal. (Crab claws)
Opposite angles in a cyclic quad add to 180
Radius and tangents meet at 90
Base angles of an isosceles triangle are equal
Interior sum = 180 x (sides-2)
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