Ages 10–11🧮 Mathematics15 verified questions on this shelf

Angles in triangles (age 10+)

Find unknown angles in triangles, quadrilaterals, and regular polygons using angle sum properties

Try three questions

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Question 1 of 3

A triangle has side lengths 8 cm and 10 cm, and the angle opposite the 8‑cm side measures 30°. How many distinct triangles satisfy these conditions?

Question 2 of 3

Given angle A = 30°, side a = 12 units, and side b = 10 units, how many distinct triangles can be constructed that satisfy these measurements?

Question 3 of 3

A triangle is to be constructed with two given side lengths, 8 cm and 6 cm, and an angle of 30° opposite the side that is 8 cm long. How many distinct triangles can be formed that satisfy these conditions?

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Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.