The angles of a triangle are in the ratio 2: 3: 4. Then the angles are

(a)

20, 30, 40

(b)

40, 60, 80

(c)

80, 20, 80

(d)

10, 15, 20

In the given figure, which of the following statement is true?

(a)

x + y + z = 180⁰

(b)

x + y + z = a + b + c

(c)

x + y + z = 2(a + b + c)

(d)

x + y + z = 3(a + b + c)

In a ΔABC, AB = AC. The value of x is ____.

(a)

80⁰

(b)

100⁰

(c)

130⁰

(d)

120⁰

If an exterior angle of a triangle is 115⁰ and one of the interior opposite angles is 35⁰, then the other two angles of the triangle are

(a)

45⁰, 60⁰

(b)

65⁰, 80⁰

(c)

65⁰, 70⁰

(d)

115⁰, 60⁰

If two plane figures are congruent then they have

(a)

same size

(b)

same shape

(c)

same angle

(d)

same shape and same size

Which of the following methods are used to check the congruence of plane figures?

(a)

translation method

(b)

superposition method

(c)

substitution method

(d)

transposition method

Which of the following rule is not sufficient to verify the congruency of two triangles.

(a)

SSS rule

(b)

SAS rule

(c)

SSA rule

(d)

ASA rule

Two students drew a line segment each. What is the condition for them to be congruent?

(a)

They should be drawn with a scale.

(b)

They should be drawn on the same sheet of paper.

(c)

They should have different lengths.

(d)

They should have the same length.

In the given figure, AD = CD and AB = CB. Identify the other three pairs that are equal.

(a)

ㄥADB = ㄥCDB, ㄥABD = ㄥCBD, BD = BD

(b)

AD = AB, DC = CB, BD = BD

(c)

AB = CD, AD = BC, BD = BD

(d)

ㄥADB = ㄥCDB, ㄥABD = ㄥCBD, ㄥDAB = ㄥDBC

In ΔABC and ΔPQR, ㄥA = 50⁰ =ㄥP, PQ = AB, and PR = AC. By which property ΔABC and ΔPQR are congruent?

(a)

SSS property

(b)

SAS property

(c)

ASA property

(d)

RHS property

Two line segments \(\overset { \_ \_ }{ AD } \) and \(\overset { \_ \_ }{ BC } \) intersect at O. Joining \(\overset { \_ \_ }{ AB } \) and \(\overset { \_ \_ }{ DC } \) we get two triangles, Δ AOB and Δ DOC as shown in the figure. Find the ㄥA and ㄥB.

Observe the figure and find the value of
ㄥA + ㄥN + ㄥG + ㄥL + ㄥE + ㄥS.

In a right angled triangle MNO, ㄥN = 90⁰, MO is extended to P. If ㄥNOP = 128⁰, find the other two angles of ΔMNO.

Using the diagram find the value of x.

If the given two triangles are congruent, then identify all the corresponding sides and also write the congruent angles.

Can the following angles form a triangle?
(i) 80⁰, 70⁰, 50⁰ 
(ii) 56⁰, 64⁰, 60⁰

If two angles of a triangle having measures 65⁰ and 35⁰, find the measure of the third angle.

In ΔPQR, find the exterior angle, ㄥSRQ.

In the ΔABC shown in the figure, find the angel z.

In the given isoceles triangle IJK (Figure), if ㄥIKL = 128⁰, find the value of x.