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Angles Around a Point WORKSHEET
Suitable for Grades: 7th Grade, 8th Grade
CCSS: 7.G.B.5, 8.G.A.5
CCSS Description: Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure.
Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.
Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.
Angles Around a Point WORKSHEET DESCRIPTION
This worksheet focuses on mastering angles around a point, progressing from foundational calculations to advanced problem-solving.
In Section A students will use bar models to aid them in calculating missing angles.
Next, in Section B learners will decide whether an image of angles around a point is accurate or not.
Section C sees students calculating more missing angles but without the support of a bar model.
Challenge learners with Section D. Here they will solve problems such as forming and solving equations in order to find the size of missing angles, and solve multi step problems involving rules such as angles in a triangles sum to 180°.
