Name ______________________Date ____________Score ____ / 12
Geometry practice
Triangle angle sum and exterior angles · 1–3
Find the missing angle or the value of x.
1.
2.
3.
Triangle inequality theorem · 4–6
Decide whether the sides can make a triangle, or find the range for the third side.
4.
5.
6.
Triangle congruence (SSS, SAS, ASA, AAS, HL) · 7–9
Which rule proves that triangle ABC is congruent to triangle DEF: SSS, SAS, ASA, AAS or HL? If none does, write “not enough information”.
7.
8.
9.
Triangle midsegment theorem · 10–12
D and E are the midpoints of two sides. Find the value of x.
10.
11.
12.
Answer key — Geometry practice
Triangle angle sum and exterior angles
1.
2.
3.
Triangle inequality theorem
4.
5.
6.
Triangle congruence (SSS, SAS, ASA, AAS, HL)
7.
8.
9.
Triangle midsegment theorem
10.
11.
12.