Geometric Reasoning - Circle Rules

Question	Answer
Image: e49154e5-7608-4b84-a3d2-02101f87ee66 (image/png)	isos. △ if 2 sides = radii
a = b Image: 9c0e8013-9e36-4fd6-a267-3372598394f1 (image/png)	base <'s isos. △ = radii
Image: 467a15f4-68ff-46d2-b34f-c013244f00f7 (image/png)	< at centre
a = 90° Image: e8fd7c80-c0a8-4df8-a642-13705a886c1f (image/png)	< in semi-circle = 90°
a = 80° Image: 982a7986-6bac-495f-845c-56fc51d4810c.gif (image/gif)	<'s on same arc =
a + c = 180° b + d = 180° Image: db1c6c36-094c-4b9b-a5f5-afe36cc67aec.gif (image/gif)	opp. <'s cyclic quad. = 180°
d = b Image: d8a1371c-074c-40bf-96b8-2bd7f9215ad3.gif (image/gif)	ext. <, cyclic quad.
a = 90° Image: 5197b052-c5ad-4a0f-86a5-2359b826cfbf (image/png)	tgt. ⊥ radius = 90°
Image: 06c7c47a-9bbe-47cf-8ec9-e5f71291fc65 (image/png)	tgt. lines from pt. =
Image: eb62e330-167b-451b-9b68-a645b56811e3 (image/png)	⊥ from centre bisects chord
e = d Image: 4981b3af-97ee-48ff-b761-9a211d7a74c3 (image/png)	< in alt. segment =

Resource summary

	Created by Emily Lloyd about 9 years ago