Page 316 - Math Smart - 7

Check My
Understanding

Q Construct these triangles using a ruler and a protractor

a) ^ b)

38 mm 66 mm

60 mm 4 cm
44 mm

a) Make an accurate drawing of this triangle.
b) Measure the length line AC.

c) Measure ZfiyAC. 6 cm

8 cm

0 Construct a triangle PQR such that PC? = 5.5 cm, QR = 3.5 cm and LPQR = 90".
0 Construct a triangleXyZsuch that >7= 7 cm. yx = 4.5 cm and 7Xyz = 90°.
0 Construct an equilateral triangle y4BC with sides 4.5 cm.

O Construct an equilateral triangle JKL with sides 7 cm.
O Construct a triangle PQR such that 0/? = 9 cm and /LPQR = APRQ = 50".
Q Construct a triangle JKL such that J/C = 7 cm and AUK = ALKJ = 70°.
0*Challengel Make an accurate drawing of this triangle.

6.5 cm

o Journal Writing

MNO is a triangle. MN = 42 mm, NO = 6.4 cm and AMNO = 60°.
a) Construct triangle MNO.
Measure the length of side MO.
Measure the size of the other angles.
Based on your measurements in part (c), do you think you have
constructed the triangles accurately? Give a reason for your answer,
e) What type of triangle is triangle MNO? Give a reason for your answer.

Geometrical Constructions
n