Al-Baraem School
Duration: 50 minutes
Class: Grade 7
Math Quiz
Date:
Name:……………………………..
Triangles
Score:
/10
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Exercise 1:
(4 pts)
Find the missing angle(s) in each of the following cases:
a)
b)
c)
d)
ABC is a scalene triangle such that B𝐴̂C=60O and A𝐵̂C=40O.
EFG is an isosceles triangle of vertex F such that F𝐸̂G=50O.
KLM is an isosceles triangle of vertex L such that K𝐿̂M=45O.
RST is a right triangle at S such that S𝑅̂T=25O.
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Exercise 2:
(3 pts)
Construct the following triangles:
a) Isosceles triangle ABC at B such that BC=5cm and AC=7cm.
b) Right triangle OXY at O such that OX=6cm and O𝑋̂Y=40O.
̂ N=55O.
c) Triangle LMN such that LM=4cm , MN=5cm and L𝑀
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Exercise 3:
(3 pts)
Given an equialateral triangle ABC of side=5cm.
a) Construct ABC.
b) Deduce the measure of its angles.
c) Consider the height [𝐴𝐻] drawn from A. Find the measure of the angles in triangle
AHB.
d) Deduce the nature of triangle AHB.
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Good Luck!!