EASY
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Find the missing angles in the following parallelogram :
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Important Questions on The Triangle and its Properties

HARD

In the figure, if OPRS, OPQ=110° and QRS=130°, then PQR is equal to

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MEDIUM
If in a ABC, AB=AC and A=70°, then B is equal to
MEDIUM

In the given figure, if line PQ and the line RS intersect at Tsuch that PRT=40°, and RPT=95° and TSQ=75°, then the value of SQT will be

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EASY
The ratio of angles in a triangle is 1:2:3, then the largest angle is
HARD

In the adjoining figure, ABC is right-angled at B. The point D is on AC such that BD=BC and BDEF is a parallelogram. If BEF=10°, then ADE is equal to.

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MEDIUM

In the figure if QTPR, TQR=40° and SPR=30°. Then the value of x and y will be

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MEDIUM
In an isosceles triangle, if the vertex angle is twice the sum of the base angles, then the value of vertex angle will be -
EASY
AB is a diameter of a circle and P is any point on the circle if PAB=30°, find the value of the PBA in degrees.
HARD

ABCD is a quadrilateral in which AB=AC,AD=CD=13 cm, BAC=20° and ADC=100°. If BC=12 cm, then AB is equal to 

EASY
Each exterior angle of a regular polygon is less than 40° and the sum of its interior angles is less than 1980°, if N is the number of sides of the polygon, then the number of possible values of N is
MEDIUM

In the given figure, if BEACEBC=40 and DAC=30, then the value of x and y are:

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HARD
Let AB be a chord of a circle with centre O. Let C be a point on the circle such that ABC=30° and O lies inside the triangle ABC. Let D be a point on AB such that DCO=OCB=20°. Find the measure of CDO in degrees.
EASY

In the figure, chord BC is extended to P. Tangent from P to the circle is PA. AQ is the bisector of BAC. If PAC=x and PCA=y, then prove that BAC=yx.

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HARD

In the given figure, if PQRS, MXQ=135° and MYR=40°, then the value of XMY will be
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EASY

In the figure, chord BC is extended to P. Tangent from P to the circle is PA. AQ is the bisector of BAC. Prove that PAQ=y+x2

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EASY

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ABCD is a parallelogram where AB=8 cm, AD=4 cm and B=120°. What is the value of A?

EASY

In the figure, B=90°, C=44°

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What is the measure of A?

MEDIUM
In ABC, BE and CD are the perpendiculars on sides AC and AB, respectively and intersect each other at O. The bisectors of OBC and OCB meet at P. If BPC = 146°, then what is the measure of A?
HARD
Let ABC be a triangle such that AB=AC. Suppose the tangent to the circumcircle of ABC at B is perpendicular to AC. Find ABC measured in degrees.
HARD
Let ABC be a triangle and let Ω be its circumcircle. The internal bisectors of angles A, B and C intersect Ω at A1, B1 and C1, respectively, and the internal bisectors of angles A1, B1 and C1 of the triangle A1B1C1 intersect Ω at A2, B2 and C2, respectively. If the smallest angle of triangle ABC is 40°, what is the magnitude of the smallest angle of triangle A2 B2C2 in degrees?