Exterior angles of a triangle. Mathematics State Board, Class 7: lessons, tests, tasks.

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1.	Exterior angle of a polygon
2.	Forms of exterior angles of a triangle
3.	Exterior angle property of a triangle

1.	Multiple choice question I Difficulty: easy	2
2.	Multiple choice question II Difficulty: easy	2
3.	Two marks example problems I Difficulty: medium	4
4.	Two marks example problems II Difficulty: medium	4
5.	Two marks exercise problems I Difficulty: medium	4
6.	Two marks exercise problems II Difficulty: medium	4
7.	Two marks exercise problems III Difficulty: medium	4
8.	Two marks exercise problems IV Difficulty: medium	4
9.	Two marks exercise problems V Difficulty: medium	0
10.	Two marks exercise problems VI Difficulty: medium	0
11.	Five marks exercise problems VII Difficulty: hard	5
12.	Five marks exercise problems VIII Difficulty: hard	5
13.	Five marks exercise problems IX Difficulty: hard	5
14.	Five marks exercise problems X Difficulty: hard	5
15.	Five marks exercise problems XI Difficulty: hard	5
16.	Five marks exercise problems XII Difficulty: hard	5
17.	Five marks exercise problems XIII Difficulty: hard	5
18.	Five marks exercise problems XIV Difficulty: hard	5
19.	Five marks exercise problems XV Difficulty: hard	5
20.	Five marks exercise problems XVI Difficulty: hard	5

1.	Calculate the exterior angle Difficulty: easy	2
2.	Determine the exterior angle of right triangle Difficulty: easy	3
3.	Evaluate interior and exterior angles of a triangle Difficulty: medium	4
4.	Determine the angle in isosceles triangle Difficulty: medium	4
5.	Evaluate the unknown value Difficulty: medium	4
6.	Calculate the unknown angles Difficulty: hard	5
7.	Estimate the unknown value Difficulty: hard	5

1.	Find the missing angle Difficulty: medium	2
2.	Evaluate the value of the missing angle x Difficulty: hard	5
3.	Determine the value of the missing angle y. Difficulty: hard	5

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Exterior angles of a triangle