S.2

Classify Triangles by Angles

Q4 · Apr–Jun

Find the missing angle, then name the triangle acute, right, or obtuse.

Level

Medium

Level

Problems

Show exampleInclude answer key

@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 5 Math Classify Triangles by Angles Skill S.2 \cdot Triangles \cdot ★★☆ Medium \cdot Quarter 4 Name Date Score / 6 Scan for answers Find the missing angle. Then write acute, right, or obtuse. Example 35° ? 55° ? = 9 0^{\circ}, right Think: 18 0^{\circ} - 3 5^{\circ} - 5 5^{\circ} = 9 0^{\circ} . A 9 0^{\circ} angle makes it right, an angle over 9 0^{\circ} makes it obtuse, and three angles under 9 0^{\circ} make it acute. 1 30° 120° ? Find the missing angle. Acute, right, or obtuse? 2 ? 20° Find the missing angle. Acute, right, or obtuse? 3 ? 45° 80° Find the missing angle. Acute, right, or obtuse? 4 ? 70° 40° Find the missing angle. Acute, right, or obtuse? 5 10° 20° ? Find the missing angle. Acute, right, or obtuse? 6 50° 55° ? Find the missing angle. Acute, right, or obtuse? Daniel Math Academy \cdot danielmath.com Worksheet # aedssbp \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 5 Math Answer Key S.2 Classify Triangles by Angles \cdot ★★☆ Medium 1 3 0^{\circ}, obtuse 2 7 0^{\circ}, right 3 5 5^{\circ}, acute 4 7 0^{\circ}, acute 5 15 0^{\circ}, obtuse 6 7 5^{\circ}, acute Daniel Math Academy \cdot danielmath.com Worksheet # aedssbp \cdot Answer Key \cdot Page 2 / 2

S. Triangles6 skills