Review of Grade 7
Answers are for parents and teachers.
1
The angles of a triangle are in the ratio 1 : 2 : 3. Find the smallest angle (degrees).
30
2
Two lines intersect and a pair of vertical angles adds up to 100°. How many degrees is the larger of the angles formed?
130
3
A base angle of an isosceles triangle is 52°. How many degrees is the angle at the apex?
76
4
The perimeter of a triangle is 45 cm and two sides are 12 cm and 17 cm. How long is the third side (cm)?
16
5
Write the three congruence tests in your own words.
1) two sides and the included angle; 2) one side and the two angles next to it; 3) three sides.