Angles Constructing Measuring Relay Race In this competitive

Angles – Constructing & Measuring – Relay Race In this competitive activity, students work in teams to answer questions provided on small pieces of paper. Students should check their answers with the teacher (who can be anywhere in the room with their answer sheet). If students are correct they can collect the next numbered sheet (easily placed in piles face-up on a desk at the front). If students are wrong they can skip the question or be given 1 or more chances.

Printing To print handouts from slides Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

! e c a R y a l e R Measuring & Constructing Angles

1 Match each angle with a name. Obtuse 2 Measure & label each angle. Reflex Acute Sketch an obtuse angle and estimate its size. Answers 3 Measure & label each angle. 4 Measure & label each angle.

5 6 Construct a 50° angle at A or B. Label the angle. A A B On the base line below, construct angles of 35° at A, and 65° at B. Join the lines so you have constructed a triangle. 7 Construct a 140° angle at A on the base line below. Label the angle. 8 Construct an angle of 220° at A. Label the angles. Calculate the missing angle. A A B

9 Construct a 300° angle at A. Label the angle. 10 Construct a triangle with angles of 20° and 70°. Label the angles. Measure and label the third angle. 12 Create an isosceles triangle with one angle of 140°. The equal sides of the triangle should be 6 cm in length. A 11 Construct a triangle with angles of 120° at A and 30° at B. Use the base line below. Label the angles. Measure and label the third angle. What type of triangle is this? A B

13 15 Create an equilateral triangle with sides of 7 cm. Construct a rhombus with 7 cm sides, one angle of 55° and one angle of 125°. 14 Construct a parallelogram below with base angles of 35° and 145°. Use the base line below. The other sides should be 5 cm in length. 16 Create a regular pentagon using the two sides below.

Match each angle with a name. 1 Obtuse Acute Measure & label each angle. 2 Reflex Acute Reflex Obtuse 55° 75° Sketch an obtuse angle and estimate its size. Answers 3 Measure & label each angle. 95° 4 Measure & label each angle. 165° 222° 250° 140° 315°

5 6 Construct a 50° angle at A or B. Label the angle. Construct a 140° angle at A on the base line below. Label the angle. Answers OR 50° 140° 50° A B A On the base line below, construct angles of 35° at A, and 65° at B. Join the lines so you have constructed a triangle. 7 Label the angles. Calculate the missing angle. 8 Construct an angle of 220° at A. Label the angle. 80° OR 35° A A 65° B 220°

9 Construct a 300° angle at A. Label the angle. 10 Construct a triangle with angles of 20° and 70°. Label the angles. Measure and label the third angle. OR A 300° 90° 20° 11 Construct a triangle with angles of 120° at A and 30° at B. Use the base line below. Label the angles. Measure and label the third angle. 12 70° Create an isosceles triangle with one angle of 140°. The equal sides of the triangle should be 6 cm in length. What type of triangle is this? Isosceles 30° A 120° 30° B 140° Answers

13 Create an equilateral triangle with sides of 7 cm. 14 Construct a parallelogram below with base angles of 35° and 145°. Use the base line below. The other sides should be 5 cm in length. 35° 60° 15 Construct a rhombus with 7 cm sides, one angle of 55° and one angle of 125°. 55° 125° 145° 8 cm 16 Create a regular pentagon using the two sides below. Answers 108°

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