Class 9 Triangles

In triangle ABC, if AB=BC and ∠B = 70°, ∠A will be:

• 70°

• 110°

• 55°

• 130°

Tags

CCSS.8.G.A.5

For two triangles, if two angles and the included side of one triangle are equal to two angles and the included side of another triangle. Then the congruency rule is:

• SSS

• ASA

• SAS

• AAS

Tags

CCSS.HSG.SRT.B.5

A triangle in which two sides are equal is called:

• Scalene triangle

• Equilateral triangle

• Isosceles triangle

• None of the above

Tags

CCSS.4.G.A.2

The angles opposite to equal sides of a triangle are:

• Equal

• Unequal

• Supplementary angles

• Complementary angles

Tags

CCSS.HSG.CO.C.10

ABC is an isosceles triangle in which altitudes BE and CF are drawn to equal sides AC and AB respectively. Then:

• BE>CF

• BE<CF

• BE=CF

• None of the above

Tags

CCSS.HSG.CO.C.9

If E and F are the midpoints of equal sides AB and AC of a triangle ABC. Then:

• BF=AC

• BF=AF

• CE=AB

• BF = CE

Tags

CCSS.HSG.CO.C.10

If ABC and DBC are two isosceles triangles on the same base BC. Then:

• ∠ABD = ∠ACD

• ∠ABD > ∠ACD

• ∠ABD < ∠ACD

• None of the above

If ABC is an equilateral triangle, then each angle equals to:

• a. 90°

• B.180°

• c. 120°

• d. 60°

Tags

CCSS.HSG.CO.C.10

If AD is an altitude of an isosceles triangle ABC in which AB = AC. Then:

• BD=CD

• b. BD>CD

• c. BD<CD

• d. None of the above

Tags

CCSS.HSG.CO.C.10

In a right triangle, the longest side is:

• Perpendicular

• Hypotenuse

• Base.

• None of the above