Construction Triangles Worksheet A There are 3 different

Construction – Triangles – Worksheet A There are 3 different types of worksheet. IMPORTANT! This worksheet relies on accurate scales. See next slide for printing instructions.

IMPORTANT! This worksheet relies on accurate scales. When printing, ensure ‘Scale to Fit Paper’ is deselected. Click: ‘Full Page Slides’ > Deselect ‘Scale to Fit Paper’

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① Constructing Triangles : Angles 110° 90° 25° 45° B) Complete this triangle. Measure third angle. 8. 4 cm 60° 30° A) Complete this triangle using the two given angles. Measure third angle. 4. 0 cm 20° 135° 52. 5° C) Complete this triangle. Measure the other lengths. What type of triangle is this? Scalene E) Draw a 8 cm base for a triangle. From the base, create angles of 62° & 36°. What is the perimeter of the triangle? 11. 88 cm 52. 5° 75° ↑ 6 cm D) Complete this triangle using the angle & length. Measure the other angles. What type of triangle is this? Isosceles 62° 36° 8 cm

Constructing Triangles : Lengths ② 90° 83° 44° ↑ 8 cm 53° ↑ 7 cm ↑ 6 cm ↑ 8 cm B) Complete this triangle using the given lengths. Measure the top angle. A) Complete this triangle using the given lengths. One arc with the compass has been done for you. Measure the angles. D) Draw a triangle with lengths: 9 cm, 8, 5 cm & 7. 5 cm. Measure all three angles. There are two solutions. 70° 7 cm 8. 5 cm ↑ 6. 5 cm C) Complete this triangle using the given length. What is the problem? 63° 9 cm 47°

Constructing Triangles : Mixed ③ 75° 90° 50° 40° A) Complete this triangle using the two given angles. Measure third angle. 46° ↑ 6 cm 35° 70° 92° B) Complete this triangle. Measure third angle. 47. 6° 42° ↑ 6. 5 cm D) Complete this triangle using the given lengths. Measure all the angles. 7 cm C) This is one side of an equilateral triangle. Complete this triangle using a compass. How can you check it is equilateral? ↑ 8 cm 80° E) Complete this triangle using the given length and the angle. Measure the top angle.

① Constructing Triangles : Angles 25° 45° B) Complete this triangle. Measure third angle. 60° 30° A) Complete this triangle using the two given angles. Measure third angle. 20° 135° C) Complete this triangle. Measure the other lengths. What type of triangle is this? E) Draw a 8 cm base for a triangle. From the base, create angles of 62° & 36°. What is the perimeter of the triangle? 75° ↑ 6 cm D) Complete this triangle using the angle & length. Measure the other angles. What type of triangle is this?

② Constructing Triangles : Lengths ↑ 8 cm ↑ 7 cm ↑ 8 cm B) Complete this triangle using the given lengths. Measure the top angle. A) Complete this triangle using the given lengths. One arc with the compass has been done for you. Measure the angles. D) Draw a triangle with lengths: 9 cm, 8, 5 cm & 7. 5 cm. Measure all three angles. ↑ 6. 5 cm C) Complete this triangle using the given length. What is the problem? ↑ 6 cm

③ Constructing Triangles : Mixed 50° 40° A) Complete this triangle using the two given angles. Measure third angle. ↑ 6 cm 35° 70° B) Complete this triangle. Measure third angle. ↑ 6. 5 cm D) Complete this triangle using the given lengths. Measure all the angles. 7 cm C) This is one side of an equilateral triangle. Complete this triangle using a compass. How can you check it is equilateral? ↑ 8 cm 80° E) Complete this triangle using the given length and the angle. Measure the top angle.

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk